(e) 1/3
Pembahasan: f o g (x) = f(g(x)) = f (1/x)
=> 2x2 + 5x
f o g (x) = 2 (1/x)2 + 5 (1/x)
f o g (2) = 2 (½)2 + 5 (½)
= 2 (¼) + 5/2
= ½ + 5/2
= 6/2
= 3
(e) 1/3
Pembahasan: f o g (x) = f(g(x)) = f (1/x)
=> 2x2 + 5x
f o g (x) = 2 (1/x)2 + 5 (1/x)
f o g (2) = 2 (½)2 + 5 (½)
= 2 (¼) + 5/2
= ½ + 5/2
= 6/2
= 3
Editor: Muhammad Khusaini