1.

Let g(x) = int_(0)^(x) f(t) dt and f(x) satisfies the equation f(x +y) = f(x) + f(y) + 2xy -1 for all x, y in R and f'(0) =2 then

Answer»

g INCREASES on `(0, oo)` and DECREASES on `(-oo, 0)`
g increases on `(0, oo)`
g decreases on `(0, oo)` and increases `(-oo, 0)`
g decreases on `(-oo, oo)`

Answer :B


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