Question

sendo a função F : R -> R dada por F (x) =9^× determine :

a) f(-1 ) b) f(0) c) f( ½) d) ( 1 )

me ajuda

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Answer 1

f(x) = 9^x

a)

f(-1) = 9^(-1)

f(-1) = 1/9^1

f(-1) = 1/9

b)

f(0) = 9^0

f(0) = 1

c)

f(1/2) = 9^(1/2)

f(1/2) = (3^2)^(1/2)

f(1/2) = 3^(2/2)

f(1/2) = 3^1

f(1/2) = 3

d)

f(1) = 9^1

f(1) = 9