Răspunsuri

2014-03-16T23:00:51+02:00
/A(2;3) apartine Gf => f(2)=3 => 2a+b=3
B(-4,5) apartine Gf => f(-4)=5 =>-4a+b=5/*(-1) =>
=> 2a+b=3
    4a-b=-5 => 6a=-2 => a= -1/3
Din 2a+b=3 => 2*(-1/3) +b=3 => -2/3 +b=3 => b=3+2/3 => b=9+2/3 => b=11/3
Deci f(x)= -1/3x + 11/3


f(-1)=1/3 +11/3=12/3