Question: 2. Assume that f(x) is continuous on [-1, 1]. a) By making the substitution u = 7 -x, show that TT xf (sin x) dx
![2. Assume that f(x) is continuous on [-1, 1]. a) By](https://s3.amazonaws.com/si.experts.images/answers/2024/06/666dd8ba58f72_938666dd8ba54657.jpg)

2. Assume that f(x) is continuous on [-1, 1]. a) By making the substitution u = 7 -x, show that TT xf (sin x) dx = f (sin x) dx . o 2 r sinc b) Use part (a) to evaluate the integral d.x. 1 + cos2 x
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