For f(-2), x will equal -2.
Plug the x-value into the equation:
[tex]2 \times 2^{-2}[/tex]
A negative exponent means that the term turns into a fraction, with 1 as the numerator and the positive exponent as the denominator.
Solve 2^(-2):
[tex]2^{-2} = \frac{1}{2^{2}} = \frac{1}{4} [/tex]
Solve the problem:
[tex]2 \times \frac{1}{4} = \frac{1}{2}[/tex]
f(-2) will equal 1/2.
