Question

Sendo f: R -> R dada por f(x)=-x+3, calcule:

A) f(x)=0

B) f(0)

Answer 1

F[x] = -x + 3

a] F[x] = 0

-x + 3 = 0

x = 3

b] F[0]

F[0] = -0 + 3

F[0] = 3