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Evaluate\(\int\limits_{-\pi/2}^{\pi/2}\)sin3x dx

Answer»

Let I = \(\int\limits_{-\pi/2}^{\pi/2}\)sin3x dx

f(x)=sin3x

 f(-x)=sin3(-x)=-sin3x

Hence, f(x) is an odd function.

Since. \(\int\limits_{-a}^af(x)dx=0\) if f(x) is an odd function.

Therefore, I = 0



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