1.

Determine whether the following functions are even or (odd). (i) f(x) = x((e^(x)-1)/(e^(x)+1)) (ii) f(x) = log(x+sqrt(x^(2)+1)), (iii) f(x) = a^(x) + a^(-x) + cos x (iv) f(x) = |x| + 1/2, where x cancel(in) Z

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Answer :(i) Even, (II) odd, (IIII) even, (IV) odd


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