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201.

If `n(ne0)` is a positive integer then the value of `int_(0)^(pi)cosnxdx` is-A. `pi`B. `-pi`C. 1D. 1

Answer» Correct Answer - D
202.

[x] denote the greatest integer function. `int_(0)^(50)sin{x-[x]pi}dx` is equal to-A. `100pi`B. `50pi`C. `(100)/(pi)`D. `(50)/(pi)`

Answer» Correct Answer - C
203.

`int_(0)^(pi) dx/(1-2acos x + a^(2)) =`A. `pi/(2-2a^(2))`B. `pi/(1-a^(2))`C. `2 pi (1-a^(2))`D. `pi(1-a^(2))`

Answer» Correct Answer - B