1.

If f : R → R and g : R → R are given by f(x) = sin x and g(x) = 5x2 find gof(x).

Answer»

Given f : RR and g : RR defined by
f (x) = sin x and g(x) = 5x2
gof(x) = g [f(x)] = g (sin x) = 5 (sin x)2 = 5 sin2 x



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