find the integrals int x cos leftx2right d x text s int_0pi 3 x2 cos x
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Question
Find the integrals: \int x \cos \left(x^{2}\right) d x \text { (s) } \int_{0}^{\pi / 3} x^{2} \cos (x) d x \int_{1}^{\infty} \frac{\cos (1 / x)}{x^{2}} d x