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Which of the following functions is (are...

Which of the following functions is (are) even and which is (are) odd?
(a) `f(x)=4-2x^(4)+sin^(2)x` (b) `f(x)=sqrt(1+x+x^(2))-sqrt(1-x+x^(2))`
(c) `f(x)=(1+a^(kx))/(1-a^(kx))` (d) `f(x)=sin x +cos x,`
(e) f(x)=const.

Text Solution

Verified by Experts

The correct Answer is:
(a) Even (b) odd; (c) odd (d) neither even, nor odd (e) even;
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