Question

Temos a seguinte função dada por: f(x) = 3x² - 5x + 9. Calcule:

F (1/2) =

Answer 1

Resposta:

Explicação passo-a-passo:

f(x) = 3x² - 5x + 9

F (1/2) =3(1/2)² - 5(1/2) + 9 => $f(\frac{1}{2}) = 3x^{2} - 5x + 9 => f(\frac{1}{2}) = 3(\frac{1}{2}) ^{2} - 5(\frac{1}{2}) + 9 =>f(\frac{1}{2}) = 3(\frac{1}{4}) ^{} - (\frac{5}{2}) + 9 => \\\\=>f(\frac{1}{2}) = \frac{3}{4} ^{} - \frac{5}{2} + 9 =>f(\frac{1}{2}) = \frac{3.1 - 5.2 + 9.4}{4} ^{} => f(\frac{1}{2}) = \frac{3 - 10 + 36}{4} ^{} => f(\frac{1}{2}) = \frac{29}{4}$