Question

Diketahui Fungsi f : x → ( 2m + 1 )x + 7. jika f (-1) = -4,maka nilai f (m) sama dengan ...

Answer 1

 f : x → ( 2m + 1 )x + 7. jika f (-1) = -4
f (-1) = (2m + 1)(-1) + 7
-4 = -2m - 1 + 7
-4 = -2m + 6
-10 = -2m
m = 5

f (5) = 11x + 7
= 11(5) + 7
= 55 + 7
= 62