Question

Dada a função F:IR --> IR tal que f(x)=5-x, calcule:

a.) f(0)
b.) f(3)
c.) f(-2)
d.) f (1/2)

Answer 1

$a)f(0) = 5 - 0 = 5 \\ \\ b)f(3) = 5 - 3 = 2 \\ \\ c)f( - 2) = 5 - ( - 2) = 5 + 2 = 7 \\ \\ d)f( \frac{1}{2} ) = 5 - \frac{1}{2} = \frac{10}{2} - \frac{1}{2} = \\ = \frac{10 - 1}{2} = \frac{9}{2}$

Answer 2

a)f (0) =5-0 = 5
b)f (3) = 5-3 = 2
c)f (-2) = 5 -(-2) =5 +2 =7
d) f(1/2) = 5 - 0,5 = 4,5