Question

dada a f unção da 1 grau f (x)=(1-5×)

A)F(0) B)F(-1) C)F(1/5) D)F(-1/5)
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Answer 1

f(x)=(1-5x)

a) f(0) = (1-5.0) ==> efetue a multiplicação primeiro, sempre

f(0) = 1 - 0

f(0) = 1

b) f(-1) = (1-5(-1)) ==> o -5 multiplica o -1

f(-1) = (1+5)

f(1) = 6

c) f(1/5) = (1-5(1/5)) ==> o numerador -5 multiplica o numerador 1

f(1/5) = (1-5/5)

f(1/5) = 1-1

f(1/5) = 0

d) f(-1/5) = (1-5(-1/5))

f(-1/5) = (1+5/5)

f(-1/5) = 1+1

f(-1/5) = 2