Question

Jika suatu fungsi f dibagi oleh (x -1) sisanya 4 jika dibagi oleh (x -2) sisanya 7 berapa sisanya jika f dibagi olrh = x2 -3x +2

Answer 1

Jawaban:

f(1) = 4

f(2) = 2

P(x) = x² - 3x + 2. Hx + ax+b

P(x) = (x-2) (x-1). Hx + ax+ b

P(2) = (2-2)(2-1).Hx + 2a + b = 2

P(1) = (1-2)(1-1). Hx + a + b = 4

a+b = 4

2a+b = 2

-------------- -

a = -2

-2 + b = 4

b = 6

H(x) = -2a+6