Question

f(x-1)=-2x+6
Determinati functia

Answer 1

determina functia de gradul intai!!

a(x-1) +b=-2x+6

ax-a+b=-2x+6

a=-2

-a+b=6⇒2+b=6⇒b=4

f(x) =ax+b=-2x+4

verificare  -2(x-1)+4=-2x+2+4=-2x+6, adevarat, bine rezolvat