{l}{x^2+2y^2=8}{y=m(x-2)+sqrt{2}} সমাধান কৰক

$$\left. \begin{array} { l } { x ^ { 2 } + 2 y ^ { 2 } = 8 } \\ { y = m ( x - 2 ) + \sqrt { 2 } } \end{array} \right.$$

x, y-ৰ বাবে সমাধান কৰক

$$x=\frac{2\left(2m^{2}-\sqrt{2m^{2}+2\sqrt{2}m+1}-\sqrt{2}m\right)}{2m^{2}+1}\text{, }y=\frac{\sqrt{2}\left(-2m|\frac{\sqrt{2}\left(\sqrt{2}m+1\right)}{2}|-\sqrt{2}m+1\right)}{2m^{2}+1}$$

$$x=\frac{2\left(2m^{2}+\sqrt{2m^{2}+2\sqrt{2}m+1}-\sqrt{2}m\right)}{2m^{2}+1}\text{, }y=\frac{\sqrt{2}\left(2m|\frac{\sqrt{2}\left(\sqrt{2}m+1\right)}{2}|-\sqrt{2}m+1\right)}{2m^{2}+1}$$

চাবষ্টিটিউশ্বন আৰু কুৱাড্ৰেটিক সূত্ৰ ব্যৱহাৰ কৰি পদক্ষেপসমূহ

দ্বিতীয় সমীকৰণটো বিবেচনা কৰক৷ mক x-2ৰে পূৰণ কৰিবলৈ বিতৰক উপাদান ব্যৱহাৰ কৰক৷

$$y=mx-2m+\sqrt{2}$$

অন্য সমীকৰণত y-ৰ বাবে mx-2m+\sqrt{2} স্থানাপন কৰক, x^{2}+2y^{2}=8৷

$$x^{2}+2\left(mx-2m+\sqrt{2}\right)^{2}=8$$

বৰ্গ mx-2m+\sqrt{2}৷

$$x^{2}+2\left(m^{2}x^{2}+2m\left(-2m+\sqrt{2}\right)x+\left(-2m+\sqrt{2}\right)^{2}\right)=8$$

2 বাৰ m^{2}x^{2}+2m\left(-2m+\sqrt{2}\right)x+\left(-2m+\sqrt{2}\right)^{2} পুৰণ কৰক৷

$$x^{2}+2m^{2}x^{2}+4m\left(-2m+\sqrt{2}\right)x+2\left(-2m+\sqrt{2}\right)^{2}=8$$

2m^{2}x^{2} লৈ x^{2} যোগ কৰক৷

$$\left(2m^{2}+1\right)x^{2}+4m\left(-2m+\sqrt{2}\right)x+2\left(-2m+\sqrt{2}\right)^{2}=8$$

সমীকৰণৰ দুয়োটা দিশৰ পৰা 8 বিয়োগ কৰক৷

$$\left(2m^{2}+1\right)x^{2}+4m\left(-2m+\sqrt{2}\right)x+2\left(-2m+\sqrt{2}\right)^{2}-8=0$$

এই সমীকৰণটো এটা মান্য ৰূপত আছে: ax^{2}+bx+c=0. কুৱাড্ৰেটিক সূত্ৰ \frac{-b±\sqrt{b^{2}-4ac}}{2a}-ত a-ৰ বাবে 1+2m^{2}, b-ৰ বাবে 2\times 2m\left(-2m+\sqrt{2}\right), c-ৰ বাবে -4+8m^{2}-8m\sqrt{2} চাবষ্টিটিউট৷

$$x=\frac{-4m\left(-2m+\sqrt{2}\right)±\sqrt{\left(4m\left(-2m+\sqrt{2}\right)\right)^{2}-4\left(2m^{2}+1\right)\left(8m^{2}-8\sqrt{2}m-4\right)}}{2\left(2m^{2}+1\right)}$$

বৰ্গ 2\times 2m\left(-2m+\sqrt{2}\right)৷

$$x=\frac{-4m\left(-2m+\sqrt{2}\right)±\sqrt{16m^{2}\left(-2m+\sqrt{2}\right)^{2}-4\left(2m^{2}+1\right)\left(8m^{2}-8\sqrt{2}m-4\right)}}{2\left(2m^{2}+1\right)}$$

-4 বাৰ 1+2m^{2} পুৰণ কৰক৷

$$x=\frac{-4m\left(-2m+\sqrt{2}\right)±\sqrt{16m^{2}\left(-2m+\sqrt{2}\right)^{2}+\left(-8m^{2}-4\right)\left(8m^{2}-8\sqrt{2}m-4\right)}}{2\left(2m^{2}+1\right)}$$

-4-8m^{2} বাৰ -4+8m^{2}-8m\sqrt{2} পুৰণ কৰক৷

$$x=\frac{-4m\left(-2m+\sqrt{2}\right)±\sqrt{16m^{2}\left(-2m+\sqrt{2}\right)^{2}-64m^{4}+64\sqrt{2}m^{3}+32\sqrt{2}m+16}}{2\left(2m^{2}+1\right)}$$

16+32m\sqrt{2}-64m^{4}+64m^{3}\sqrt{2} লৈ 16m^{2}\left(-2m+\sqrt{2}\right)^{2} যোগ কৰক৷

$$x=\frac{-4m\left(-2m+\sqrt{2}\right)±\sqrt{32m^{2}+32\sqrt{2}m+16}}{2\left(2m^{2}+1\right)}$$

16+32m^{2}+32m\sqrt{2}-ৰ বৰ্গমূল লওক৷

$$x=\frac{-4m\left(-2m+\sqrt{2}\right)±4\sqrt{2m^{2}+2\sqrt{2}m+1}}{2\left(2m^{2}+1\right)}$$

2 বাৰ 1+2m^{2} পুৰণ কৰক৷

$$x=\frac{-4m\left(-2m+\sqrt{2}\right)±4\sqrt{2m^{2}+2\sqrt{2}m+1}}{4m^{2}+2}$$

এতিয়া ± যোগ হ’লে সমীকৰণ x=\frac{-4m\left(-2m+\sqrt{2}\right)±4\sqrt{2m^{2}+2\sqrt{2}m+1}}{4m^{2}+2} সমাধান কৰক৷ 4\sqrt{1+2m^{2}+2m\sqrt{2}} লৈ -4m\left(-2m+\sqrt{2}\right) যোগ কৰক৷

$$x=\frac{-4m\left(-2m+\sqrt{2}\right)+4\sqrt{2m^{2}+2\sqrt{2}m+1}}{4m^{2}+2}$$

2+4m^{2}-ৰ দ্বাৰা -4m\left(-2m+\sqrt{2}\right)+4\sqrt{1+2m^{2}+2m\sqrt{2}} হৰণ কৰক৷

$$x=\frac{2\left(2m^{2}+\sqrt{2m^{2}+2\sqrt{2}m+1}-\sqrt{2}m\right)}{2m^{2}+1}$$

এতিয়া ± বিয়োগ হ’লে সমীকৰণ x=\frac{-4m\left(-2m+\sqrt{2}\right)±4\sqrt{2m^{2}+2\sqrt{2}m+1}}{4m^{2}+2} সমাধান কৰক৷ -4m\left(-2m+\sqrt{2}\right)-ৰ পৰা 4\sqrt{1+2m^{2}+2m\sqrt{2}} বিয়োগ কৰক৷

$$x=\frac{8m^{2}-4\sqrt{2m^{2}+2\sqrt{2}m+1}-4\sqrt{2}m}{4m^{2}+2}$$

2+4m^{2}-ৰ দ্বাৰা 8m^{2}-4m\sqrt{2}-4\sqrt{1+2m^{2}+2m\sqrt{2}} হৰণ কৰক৷

$$x=\frac{2\left(2m^{2}-\sqrt{2m^{2}+2\sqrt{2}m+1}-\sqrt{2}m\right)}{2m^{2}+1}$$

x-ৰ বাবে দুটা সমাধান আছে: \frac{2\left(2m^{2}-m\sqrt{2}+\sqrt{2m^{2}+1+2m\sqrt{2}}\right)}{1+2m^{2}} আৰু \frac{2\left(2m^{2}-m\sqrt{2}-\sqrt{2m^{2}+1+2m\sqrt{2}}\right)}{1+2m^{2}}৷ দুয়োটা সমীকৰণকে সন্তুষ্ট কৰিবৰ বাবে অনুৰূপ সমাধান বিচাৰিবলৈ সমীকৰণ y=mx-2m+\sqrt{2} y -ত x-ৰ বাবে \frac{2\left(2m^{2}-m\sqrt{2}+\sqrt{2m^{2}+1+2m\sqrt{2}}\right)}{1+2m^{2}} চাবষ্টিটিউট কৰক৷

$$y=m\times \frac{2\left(2m^{2}+\sqrt{2m^{2}+2\sqrt{2}m+1}-\sqrt{2}m\right)}{2m^{2}+1}-2m+\sqrt{2}$$

m বাৰ \frac{2\left(2m^{2}-m\sqrt{2}+\sqrt{2m^{2}+1+2m\sqrt{2}}\right)}{1+2m^{2}} পুৰণ কৰক৷

$$y=\frac{2\left(2m^{2}+\sqrt{2m^{2}+2\sqrt{2}m+1}-\sqrt{2}m\right)}{2m^{2}+1}m-2m+\sqrt{2}$$

সমীকৰণ y=mx-2m+\sqrt{2}-ত x-ৰ বাবে \frac{2\left(2m^{2}-m\sqrt{2}-\sqrt{2m^{2}+1+2m\sqrt{2}}\right)}{1+2m^{2}} চাবষ্টিটিউট কৰক আৰু y দুয়োটা সমীকৰণকে সন্তুষ্ট কৰিবৰ বাবে অনুৰূপ সমাধান বিচাৰিবলৈ সমাধান কৰক৷

$$y=m\times \frac{2\left(2m^{2}-\sqrt{2m^{2}+2\sqrt{2}m+1}-\sqrt{2}m\right)}{2m^{2}+1}-2m+\sqrt{2}$$

m বাৰ \frac{2\left(2m^{2}-m\sqrt{2}-\sqrt{2m^{2}+1+2m\sqrt{2}}\right)}{1+2m^{2}} পুৰণ কৰক৷

$$y=\frac{2\left(2m^{2}-\sqrt{2m^{2}+2\sqrt{2}m+1}-\sqrt{2}m\right)}{2m^{2}+1}m-2m+\sqrt{2}$$

ছিষ্টেমটো এতিয়া ঠিক হৈছে৷

$$y=\frac{2\left(2m^{2}+\sqrt{2m^{2}+2\sqrt{2}m+1}-\sqrt{2}m\right)}{2m^{2}+1}m-2m+\sqrt{2},x=\frac{2\left(2m^{2}+\sqrt{2m^{2}+2\sqrt{2}m+1}-\sqrt{2}m\right)}{2m^{2}+1}\text{ or }y=\frac{2\left(2m^{2}-\sqrt{2m^{2}+2\sqrt{2}m+1}-\sqrt{2}m\right)}{2m^{2}+1}m-2m+\sqrt{2},x=\frac{2\left(2m^{2}-\sqrt{2m^{2}+2\sqrt{2}m+1}-\sqrt{2}m\right)}{2m^{2}+1}$$

x, y-ৰ বাবে সমাধান কৰক (জটিল সমাধান)

$$\left\{\begin{matrix}x=\frac{2\left(2m^{2}-\sqrt{2m^{2}+2\sqrt{2}m+1}-\sqrt{2}m\right)}{2m^{2}+1}\text{, }y=\frac{\sqrt{2}\left(-m\sqrt{2\left(\sqrt{2}m+1\right)^{2}}-\sqrt{2}m+1\right)}{2m^{2}+1}\text{; }x=\frac{2\left(2m^{2}+\sqrt{2m^{2}+2\sqrt{2}m+1}-\sqrt{2}m\right)}{2m^{2}+1}\text{, }y=\frac{\sqrt{2}\left(m\sqrt{2\left(\sqrt{2}m+1\right)^{2}}-\sqrt{2}m+1\right)}{2m^{2}+1}\text{, }&m\neq -\frac{\sqrt{2}i}{2}\text{ and }m\neq \frac{\sqrt{2}i}{2}\\x=-\frac{\left(-2m+\sqrt{2}\right)^{2}-4}{2m\left(-2m+\sqrt{2}\right)}\text{, }y=\frac{2m^{2}-2\sqrt{2}m+3}{-2m+\sqrt{2}}\text{, }&m=-\frac{\sqrt{2}i}{2}\text{ or }m=\frac{\sqrt{2}i}{2}\end{matrix}\right.$$