Question

Fie functia f:[-2 ,2] in R ,f(x)=3x-6
a)calculati f(-1) di f(0) si f (2/3)

Answer 1

$f(x)=3x-6 \\ f(-1)=3*(-1)-6=-3-6=-9 \\ f(0)=3*0-6=-6 \\ f( \frac{2}{3})=3* \frac{2}{3}-6=2-6=-4$

Answer 2

f ( x ) = 3x -6
f ( - 1) = 3 x ( - 1) - 6 = -3 - 6 = - 9
f ( 0 ) = 3 x 0 - 6 = - 6
f ( 2/3 ) = 3 x 2 /3 - 6= 2 - 6 = -4