Question

dada a função..., determine:
$f (x) = {3}^{x}$
a)f=(2)
b)f=(-3)
c)f=(0)

Answer 1

a) 
$f(x)=3^x\\\\ f(2)=3^2\\\\ f(2)=3.3\\\\ f(2)=9$

b)
$f(x)=3^x\\\\ f(-3)=3^{-3}\\\\ f(-3)=\frac{1}{3^3}\\\\ f(-3)=\frac{1}{3.3.3}\\\\ f(-3)=\frac{1}{27}$

c)
$f(x)=3^x\\\\ f(0)=3^0\\\\ f(0)=1$