Question

Sendo f (x) = 3x - 1 x 2 + 1
Calcule

a) f (2)
b) f (-1)
c) f (1) + f (3)

Answer 1

Sendo f (x) = 3x - 1 x 2 + 1Calcule 

a) f (2) = 3.2 - 1.2^2 + 1 ==> 6-4+1 ==> 3
b) f (-1) = 3.(-1) - 1.(-1)^2 + 1 ==> -3-1+1 ==> - 3
c) f (1) + f (3) 

f(1) = 3.(1) - 1.(1)^2 + 1 ==> 3+1+1 ==> 5
f(3) = 3.(3) - 1.(3)^2 + 1 ==> 9-9+1 ==> 1