แก้โจทย์ 165,000=d(1-(1+.002/12))^-(30)(12)/(frac{0.08{12})}

$$165,000 = \frac { d ( 1 - ( 1 + \frac { .002 } { 12 } ) ) ^ { - ( 30 ) ( 12 ) } } { ( \frac { 0.08 } { 12 } ) }$$

หาค่า d

$$d=\frac{11}{136285652597652400633072146943255896341029201131980190548843315311006893267249227122863590367756090838736813150399831954741580003320794103238355908174878733366334155884618443998783841969103173072216240445102125485099344220416740519344692695598710475488518829182397045850190391541760000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000}\approx 8.071282479 \cdot 10^{-1358}$$

ขั้นตอนการแก้สมการลิเนียร์

ขยาย \frac{0.002}{12} โดยคูณทั้งตัวเศษและตัวส่วนด้วย 1000

$$165000=\frac{d\left(1-\left(1+\frac{2}{12000}\right)\right)^{-30\times 12}}{\frac{0.08}{12}}$$

ทำเศษส่วน \frac{2}{12000} ให้เป็นพจน์ต่ำสุดโดยลดทอนด้วย 2

$$165000=\frac{d\left(1-\left(1+\frac{1}{6000}\right)\right)^{-30\times 12}}{\frac{0.08}{12}}$$

เพิ่ม 1 และ \frac{1}{6000} เพื่อให้ได้รับ \frac{6001}{6000}

$$165000=\frac{d\left(1-\frac{6001}{6000}\right)^{-30\times 12}}{\frac{0.08}{12}}$$

ลบ \frac{6001}{6000} จาก 1 เพื่อรับ -\frac{1}{6000}

$$165000=\frac{d\left(-\frac{1}{6000}\right)^{-30\times 12}}{\frac{0.08}{12}}$$

คูณ -30 และ 12 เพื่อรับ -360

$$165000=\frac{d\left(-\frac{1}{6000}\right)^{-360}}{\frac{0.08}{12}}$$

คำนวณ -\frac{1}{6000} กำลังของ -360 และรับ 13628565259765240063307214694325589634102920113198019054884331531100689326724922712286359036775609083873681315039983195474158000332079410323835590817487873336633415588461844399878384196910317307221624044510212548509934422041674051934469269559871047548851882918239704585019039154176000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

$$165000=\frac{d\times 13628565259765240063307214694325589634102920113198019054884331531100689326724922712286359036775609083873681315039983195474158000332079410323835590817487873336633415588461844399878384196910317307221624044510212548509934422041674051934469269559871047548851882918239704585019039154176000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000}{\frac{0.08}{12}}$$

ขยาย \frac{0.08}{12} โดยคูณทั้งตัวเศษและตัวส่วนด้วย 100

$$165000=\frac{d\times 13628565259765240063307214694325589634102920113198019054884331531100689326724922712286359036775609083873681315039983195474158000332079410323835590817487873336633415588461844399878384196910317307221624044510212548509934422041674051934469269559871047548851882918239704585019039154176000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000}{\frac{8}{1200}}$$

ทำเศษส่วน \frac{8}{1200} ให้เป็นพจน์ต่ำสุดโดยลดทอนด้วย 8

$$165000=\frac{d\times 13628565259765240063307214694325589634102920113198019054884331531100689326724922712286359036775609083873681315039983195474158000332079410323835590817487873336633415588461844399878384196910317307221624044510212548509934422041674051934469269559871047548851882918239704585019039154176000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000}{\frac{1}{150}}$$

หาร d\times 13628565259765240063307214694325589634102920113198019054884331531100689326724922712286359036775609083873681315039983195474158000332079410323835590817487873336633415588461844399878384196910317307221624044510212548509934422041674051934469269559871047548851882918239704585019039154176000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 ด้วย \frac{1}{150} เพื่อรับ d\times 2044284788964786009496082204148838445115438016979702858232649729665103399008738406842953855516341362581052197255997479321123700049811911548575338622623181000495012338269276659981757629536547596083243606676531882276490163306251107790170390433980657132327782437735955687752855873126400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

$$165000=d\times 2044284788964786009496082204148838445115438016979702858232649729665103399008738406842953855516341362581052197255997479321123700049811911548575338622623181000495012338269276659981757629536547596083243606676531882276490163306251107790170390433980657132327782437735955687752855873126400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000$$

สลับข้างเพื่อให้พจน์ตัวแปรทั้งหมดอยู่ทางด้านซ้าย

$$d\times 2044284788964786009496082204148838445115438016979702858232649729665103399008738406842953855516341362581052197255997479321123700049811911548575338622623181000495012338269276659981757629536547596083243606676531882276490163306251107790170390433980657132327782437735955687752855873126400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000=165000$$

หารทั้งสองข้างด้วย 2044284788964786009496082204148838445115438016979702858232649729665103399008738406842953855516341362581052197255997479321123700049811911548575338622623181000495012338269276659981757629536547596083243606676531882276490163306251107790170390433980657132327782437735955687752855873126400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

$$d=\frac{165000}{2044284788964786009496082204148838445115438016979702858232649729665103399008738406842953855516341362581052197255997479321123700049811911548575338622623181000495012338269276659981757629536547596083243606676531882276490163306251107790170390433980657132327782437735955687752855873126400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000}$$

ทำเศษส่วน \frac{165000}{2044284788964786009496082204148838445115438016979702858232649729665103399008738406842953855516341362581052197255997479321123700049811911548575338622623181000495012338269276659981757629536547596083243606676531882276490163306251107790170390433980657132327782437735955687752855873126400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000} ให้เป็นพจน์ต่ำสุดโดยลดทอนด้วย 15000

$$d=\frac{11}{136285652597652400633072146943255896341029201131980190548843315311006893267249227122863590367756090838736813150399831954741580003320794103238355908174878733366334155884618443998783841969103173072216240445102125485099344220416740519344692695598710475488518829182397045850190391541760000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000}$$