ដោះស្រាយ 21/cosh(-1)tanh(-1)

$$2 \frac{ 1 }{ \cosh ( -1 ) } \tanh ( -1 )$$

វាយតម្លៃ

$$\frac{4956364553426012221747696042357347}{2500380781440641000000000000000000}\approx 1.982243901$$

ជំហានចម្លើយ

Evaluate trigonometric functions in the problem

$$2 \frac{1}{1.0001523125762564} -0.017451520543541533$$

ពង្រីក \frac{1}{1.0001523125762564} ដោយគុណទាំងភាគបែង និងភាគយកជាមួយនឹង 10000000000000000។

$$2\times \frac{10000000000000000}{10001523125762564}-0.017451520543541533$$

កាត់បន្ថយប្រភាគ \frac{10000000000000000}{10001523125762564} ទៅតួដែលតូចបំផុតដោយ​ដក និងលុបចេញ 4។

$$2\times \frac{2500000000000000}{2500380781440641}-0.017451520543541533$$

បង្ហាញ 2\times \frac{2500000000000000}{2500380781440641} ជាប្រភាគទោល។

$$\frac{2\times 2500000000000000}{2500380781440641}-0.017451520543541533$$

គុណ 2 និង 2500000000000000 ដើម្បីបាន 5000000000000000។

$$\frac{5000000000000000}{2500380781440641}-0.017451520543541533$$

បម្លែងចំនួនទសភាគ 0.017451520543541533 ទៅជាប្រភាគ \frac{17451520543541533}{10000000000}។ កាត់បន្ថយប្រភាគ \frac{17451520543541533}{10000000000} ទៅតួដែលតូចបំផុតដោយ​ដក និងលុបចេញ 1។

$$\frac{5000000000000000}{2500380781440641}-\frac{17451520543541533}{1000000000000000000}$$

ផលគុណរួមតូចបំផុតនៃ 2500380781440641 និង 1000000000000000000 គឺ 2500380781440641000000000000000000។ ប​ម្លែង \frac{5000000000000000}{2500380781440641} និង \frac{17451520543541533}{1000000000000000000} ទៅជាប្រភាគជាមួយភាគបែង 2500380781440641000000000000000000។

$$\frac{5000000000000000000000000000000000}{2500380781440641000000000000000000}-\frac{43635446573987778252303957642653}{2500380781440641000000000000000000}$$

ដោយសារ \frac{5000000000000000000000000000000000}{2500380781440641000000000000000000} និង \frac{43635446573987778252303957642653}{2500380781440641000000000000000000} មានភាគបែងដូចគ្នា សូមដកពួកវាដោយការដកភាគយករបស់ពួកវា។

$$\frac{5000000000000000000000000000000000-43635446573987778252303957642653}{2500380781440641000000000000000000}$$

ដក​ 43635446573987778252303957642653 ពី 5000000000000000000000000000000000 ដើម្បីបាន 4956364553426012221747696042357347។

$$\frac{4956364553426012221747696042357347}{2500380781440641000000000000000000}$$