Composite Function Example 2

Example 2

Functions f and g are defined by f:xx1   and g:x 3x x+4  .  Find
(a) the value of gf(3),
(b) the value of fg(-1 ),
(c) the composite functions fg,
(d) the composite functions gf,
(e) the composite functions g 2 ,
(f) the composite functions f 2 .