Question

Dadas as funções f(x)= 3x - 1/2 e g(x)= 2x/5 + 1, determine o valor de f(1/3) - g(-2) .

Answer 1

$f(\frac{1}{3})-g(-2)=3.(\frac{1}{3})-\frac{1}{2}-\frac{2.(-2)}{5}-1\\ \\ f(\frac{1}{3})-g(-2)=1-\frac{1}{2}+\frac{4}{5}-1\\ \\ f(\frac{1}{3})-g(-2)=\frac{4}{5}-\frac{1}{2}=\frac{8-5}{10}=\frac{3}{10}$

Answer 2

f(1/3)=3.(1/3)
f(1/3)=3-0,5
f(1/3)=2,5

g(-2)=[(2.-2)/5]+1
g(-2)=-4/5+1
g(-2)=-0,8+1
g(-2)=0,2

f(1/3)-g(-2)=2,5-0,2
f(1/3)-g(-2)=2,3