Question
Question: The value of \(\int _ { - 1 } ^ { 1 } \frac { \sin x - x ^ { 2 } } { 3 - | x | } d x\) is...
The value of ∫−113−∣x∣sinx−x2dx is
A
0
B
2∫013−∣x∣sinxdx
C
2∫013−∣x∣−x2dx
D
2∫013−∣x∣sinx−x2dx
Answer
2∫013−∣x∣−x2dx
Explanation
Solution
I=∫−113−∣x∣sinx−x2dx=∫−113−∣x∣sinxdx−∫−113−∣x∣x2dx
Here, f(x)=3−∣x∣sinx is an odd function but f(x)=3−∣x∣x2 is an even function
∴I=−∫−113−∣x∣x2dx=−2∫013−∣x∣x2dx =2∫013−∣x∣−x2dx .