Suppose that f(x)=-4-3x and g(x)=sqrt2+x find the rule of the composite function fog.?

1 Answer
Oct 26, 2017

See the following :)

Explanation:

#f @ g = f[ g(x)]#

In this question, you can sub the inner part #g(x)# first and sub the things we get to replace the #x# of #f(x)#:

#f @ g = f[ g(x)]= f(sqrt2+x)#

#=-4-3(sqrt2+x)#

#=-4-3sqrt2 -3x#