Question

Dada a função f: IR -> IR definida por x² - 3x + 4. Calcule: f(1/2)

Answer 1

x² - 3x + 4.

f(1/2) = (1/2)² - 3(1/2) + 4

f(1/2) = 1  - 3 + 4
             4     2

F(1/2) = 1 - 6 + 16
                     4
 F(1/2) =  11   
                  4

Answer 2

$\frac{1}{2}^{2} - 3* \frac{1}{2} + 4 -> \frac{1}{4} - \frac{3}{2} +4 -> m.m.c 4 -> \frac{11}{4}$