Question

Fungsi f : R -> R ditentukan oleh f (x) ; px + q jika F(3) : 20 DAN f (-2) : 5 tentukan nilai dari p dan q

Answer 1

20 = 3p + q
5   = -2p + q _
15  = 5p
3    = p

q => 20 - 3q = 20 -9 = 11

Answer 2

F(x) = px + q
f(3) = 20 = 3p + q
f(-2) = 5 = -2p + q (dieliminasi)
=> 15 = 5p
=> 3 = p

=> -2 p + q = 5
=> -2(3)+q = 5
=> -6 + q = 5
=> q = 11