Question

Calcule o valor da função F(X) = 2.x+3.14 para os seguintes valores de X :
A) x=0
B) x = -1
C) x = 1,6
D x = -1/4

Answer 1

Resposta:

$f(x) = 2 \times x + 3 \times 14 \\ f(x) = 2x + 42 \\ \\ \\ a)x = 0 \\ f(0) = 2 \times 0 + 42 \\ f(0) = 0 + 42 \\ f(x) = 42 \\ \\ b)x = - 1 \\f ( - 1) = 2 \times ( - 1) + 42 \\ f( - 1) = - 2 + 42 \\ f( - 1) = 40 \\ \\ c)x = 1.6 \\ f(1.6) = 2 \times 1.6 + 42 \\ f(1.6) = 3.2 + 42 \\ f(1.6) = 45.2 \\ \\ d)x = - \frac{1}{4} \\ f( - \frac{1}{4} ) = 2 \times (- \frac{1}{4}) + 42 \\ f( - \frac{1}{4} ) = - \frac{2}{4} + 42 \\ f( - \frac{1}{4} ) = - \frac{1}{2} + 42 \\ f (- \frac{1}{4} ) = \frac{ - 1 + 84}{2} \\ f( - \frac{1}{4} ) = \frac{83}{2}$