Question

Jika f(2x-3) = 4x - 7
maka nilai dari f(17) - f(7)

Answer 1

Cara I
ubah dulu k bentuk f(x) = ax + b
f (2x-3) = 2(2x-3) - 1
maka
f(17) = 2.(17) - 1
       = 34 - 1
       = 33
f(7) = 2.(7) - 1
     = 14 - 1
     = 13
f(7) - f(7) = 33 - 13 = 20