1.

Find the intervals in which f(x) is increasing or decreasing:(i) f(x) = x|x|, x ∈R(ii) f(x) = sinx + |sinx|, 0 < x ≤2π(iii) f(x) = sinx(1 + cosx), 0 < x < π2 [CBSE 2014]

Answer» Find the intervals in which f(x) is increasing or decreasing:



(i) f(x) = x|x|, x R



(ii) f(x) = sinx + |sinx|, 0 < x 2π



(iii) f(x) = sinx(1 + cosx), 0 < x < π2

[CBSE 2014]


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