Question

Dada a função f(x)= x²-7x+10, calcule:

a) F(1/7)=

Answer 1

Fica assim:

f(x) = x² - 7x + 10
f($\frac{1}{7}$) = ($\frac{1}{7}$)² - 7 . $\frac{1}{7}$ + 10
f($\frac{1}{7}$) = $\frac{1}{49}$ - 1 + 10
f($\frac{1}{7}$) = -$\frac{48}{49}$ + 10
f($\frac{1}{7}$) = $\frac{442}{49}$