AP EAMCET2007MathematicsDefinite Integration
If f(t)= _ -t ^t e^ -|x| 2 d x , then _ t f(t) is equal
Options
- A1
- B1 2
- C0
- D-1
Correct answer
A. 1
Step-by-step solution
aligned f(t) & = _ -t ^t e^ -|x| 2 d x & =2 ₀^t e^ -x 2 d x & =- [e^ -x ]₀^t=-e^ -t +1 aligned Now, aligned _ t f(t) & =- _ t e^ -t +1 & =0+1 & =1 aligned