AP EAMCET2004MathematicsBasics of Mathematics
If x= [ ( 4 + ) ] , then the value of h x is
Options
- A2
- B-tan 2
- C2
- D-cot 2
Correct answer
B. -tan 2
Step-by-step solution
We know that, aligned h x & = e^x-e^ -x 2 & = ( 4 + )- ( 4 + ) 2 & = 1- ^2 ( 4 + ) 2 ( 4 + ) & = 1 2 ( 4 + ) & =- 1 2 =- 2 aligned