Question

dadas aa funções f(x)=2x-3 determine: f(1/2) ?
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Answer 1

Vamos lá :

f(x) = 2x - 3

f(1/2) = 2.(1/2) - 3 = 2/2 - 3 = 1 - 3 = - 2

Espero ter ajudado !!!

Answer 2

$f(x)=2x-3\\\\f(\frac{1}{2})=2.\frac{1}{2}-3\\\\f(\frac{1}{2})=1-3\\\\f(\frac{1}{2})=-2$