Question

Fungsi p didefinisikan oleh rumus p(x) = xkuadrat + bx + c. tentukanlah rumus fungsi p(x) jika diketahui p(1) = p(2) dan p(-1) = 3.

MNTA TOLONG JWBANNYA YAA, MKSHH!

Answer 1

P(1) = p(2) 
1+b+c = 4+2b + c
b - 2b = 4-1
-b = 3 --> b = -3
.
p(-1) = 3--> 1 - b + c = 3
1- (-3) + c = 3
1+3 + c = 3
c = 3-4  = -1
.
p(x)= x² + bx+ c
p(x) =x² -3 x -1