Question

dada a funçao f(x)=3x²-2x+1 calcule A) f(-1) b) f(0) c) f(1) d)f(2)

Answer 1

f(x) = 3x²  - 2x + 1 

a) f(-1) = 3 . (-1)² - 2 .( -1) + 1
    f(-1) =  3 . 1 + 2 + 1
    f(-1) = 3 + 3 
    f(-1) = 6

b) f(0) = 3 . 0² - 2 . 0 + 1 = 0 - 0 +1 = 1

c) f(1) = 3 . 1 - 2 . 1 + 1 = 3 - 2 + 1 = 3 - 2 + 1 = 2

d) f (2) = 3 . 2² - 2 . 2  + 1 = 3. 4 - 4 + 1 = 12 - 4 + 1 = 9