Q. 9

Mark the correct alternative in the following:

If and then f(g(x) is equal to

A. f (3x)

B. {f(x)}3

C. 3f (x)

D. -f (x)

Answer :




Using: (1+x)3=1+3x+3x2+x3


And (1-x)3=1-3x+3x2-x3



f(g(x))=3f(x)


Option C is correct.

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