Q. 74.0( 2 Votes )

Let f be any real

Answer :

We are given that f is a real function and g is a function given by


g(x) = 2x


To prove; gof=f + f.


L.H.S


gof(x) = g(f(x)) = 2f(x)


=f + f = R.H.S


gof=f + f


Hence proved


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