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The value of int0^pi (sin(n+1/2)x)/(sin ...

The value of `int_0^pi (sin(n+1/2)x)/(sin (x/2)) dx` is, (a) `n in I, n >= 0 pi/2` (b) `0` (c) `pi` (d) `2pi`

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CENGAGE ENGLISH-INTEGRALS-All Questions
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  10. Let g(x)=int0^x f(t).dt,where f is such that 1/2<=f(t)<=1 for t in [0,...

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