Diketahui f (x) = x² + 2x 7 dang (x) = 4x – 5, fungsi komposisi (g o f) (x) adalah…

Komposisi fungsi

gof(x)= g{ f(x)}

–

gof(x)  =

= g { f(x)}

= g {x² +2x + 7}

=  4 (x² +2x + 7) – 5

= 4x² + 8x + 28- 5

= 4x² + 8x + 23