Question

seja F R -> R a função definida por f(x) = 4x+1 determine:
a) f(-1)
b) f(5)
c) f(1)

Answer 1

$a)f( - 1) = 4 \times ( - 1) + 1 = - 4 + 1 = - 3 \\ \\ b)f(5) = 4 \times 5 + 1 = 20 + 1 = 21 \\ \\ c)f(1) = 4 \times x + 1 = 4 + 1 = 5$