Question

f(xy)= f(x)/y
f(300)=5
f(700)=?

Answer 1

Bom dia Edeilson!


Solução!


$f(xy)= \dfrac{f(x)}{y} \\\\\\\ f(300)=5\\\\\ f(700)=?$



$700=300y\\\\\\ \dfrac{700}{300}=y\\\\\\\\\ \dfrac{7}{3}=y$



$Fazendo!\\\\\\\ f(300. \frac{7}{3} )= \dfrac{5 }{ \dfrac{7}{3} }= \dfrac{5.3}{ 7 }= \boxed{\dfrac{15}{7}}$


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Bons estudos!