LT20: Evaluate Exponential Functions

Front

Evaluate f(-4) for f(x) = 2^x

Back

f(-4) = 1/16

Front

Evaluate the function y=(3)^x for x=-2

Back

y = 1/9

Front

Evaluate y = 12^x for x = 2

Back

y = 144

Front

Evaluate g(x) = 3(2)^x for g(3)

Back

g(3) = 24

Front

Rewrite using a positive exponent: g^-7

Back

g^-7 = 1/g^7

Front

What is an exponential function?

Back

A function of the form f(x) = a*b^x where a ≠ 0, b > 0, and b ≠ 1.

Front

What is the base in an exponential function?

Back

The base is the constant 'b' in the function f(x) = a*b^x.

Front

How do you evaluate an exponential function at a negative exponent?

Back

Use the property b^(-n) = 1/(b^n).

Front

What is the value of 2^3?

Back

2^3 = 8.

Front

What is the value of 3^0?

Back

3^0 = 1.