Question

Di ketahui : f(4x-2) = 2x+3
Tentukan : a) f(x) b) f(-2) c) f(4)

Answer 1

Y 4x-2 = 2x + 3
4xy -2y = 2x + 3
4xy - 2x = 3 + 2y
x (4y - 2 ) = 3 + 2y
x = 3 + 2y / 4y - 2

f(x) = 3 + 2x / 4x - 2
f(-2) = 3 + 2 (-2) / 4(-2) - 2 = 7/ -10
f(4) = 3 + 2 (4) / 4 (4) - 2 = 11 /14