diberikan fungsi g(x) = mx + n dan ( g o g)(x) = 49x + 48. a. Carilah nilai m dan n. b. Untuk m > 0, tentukan nilai x jika 4g(x) = g(2x - 3) - 3.

gog(x) = 49x + 48
g(g(x)) = 49x + 48
m(mx + n) + n = 49x + 48
m²x + mn + n = 49x + 48

m²x = 49x
m² = 49
m = 7

mn + n = 48
7n + n = 48
8n = 48
n = 6

g(x) = 7x + 6

4g(x) = g(2x - 3) - 3
4(7x + 6) = 7(2x - 3) + 6 - 3
28x + 24 = 14x - 21 + 3
28x - 14x = -21 + 3 - 24
14x = -42
x = -3