Question

dada a função f: R--R, definida pela lei f(x) = 1 -5x, determine: a) f(0) b) f(-1) c) f(1/5) d) f( -1/5)

Answer 1

a) f(0) = 1 - 5 × 0 = 0
b) f(-1) = 1 - 5 × (-1) = 4 
c) f(1/5) = 1 - 5 × 1/5 = -4 × 1/5 = -4/5 
d) f( -1/5) = 1 - 5 × (-1/5) = -4 × (-1/5) = 4/5