Question

função exponencial f(x) 2^x -1 usando para X: -2,-1,0,1,2

Answer 1

Oi!
$f(x) = 2^x - 1$

a)x = - 2
$f(x) = 2^x - 1 \\ f(-2) = 2^{-2} - 1 \\ f(-2) = {(\frac{1}{2}) }^{2} - 1\\ f(-2) = \frac{1}{4} - 1 \\ \boxed{f(-2) = -\frac{3}{4} }$

b) x = - 1
$f(x) = 2^x - 1 \\ f(-1) = 2^{-1} - 1 \\ f(-1) = \frac{1}{2} - 1 \\ \boxed{f(-1) = - \frac{1}{2}}$

c) x = 0
$f(x) = 2^x - 1 \\ f(0) = 2^0 - 1 \\ f(0) = 1 - 1 \\ \boxed{f(0) = 0}$

d) x = 1
$f(x) = 2^x - 1 \\ f(1) = 2^1 - 1 \\ f(1) = 2 - 1 \\ \boxed{f(1) = 1 }$

e) x = 2
$f(x) = 2^x - 1 \\ f(2) = 2^2 - 1 \\ f(2) = 4 - 1 \\ \boxed{ f(2) = 3}$

Bons estudos!