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∫ dx/(1 + cos x) (for x → pi/4,3pi/4) is equal to

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∫ dx/(1 + cos x) (for x → pi/4,3pi/4) is equal to

(a) 2

(b) -2

(c) 1/2

(d) -1/2

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1 Answer

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Best answer

Correct option (a) 2

Explanation :

On adding Eqs. (i) and (ii), we get

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