If #f(x)=3x+4# and #g(x)=x^2-1#, how do you find #f(g(x))#?
1 Answer
Jan 21, 2017
Explanation:
Substitute x=g(x) that is
#x=x^2-1# into f(x).
#rArrf(g(x))=f(color(red)(x^2-1))#
#=3(color(red)(x^2-1))+4#
#=3x^2-3+4=3x^2+1#
