College Algebra / Unit 8 Alg 416 short lesson, about 20 seconds
Evaluating Exponential Functions
Captions available
The idea
Evaluating an exponential function substitutes the input into the exponent and computes by the exponent rules.
In practice
For f(x) = 3·2ˣ: f(3) = 3·2³ = 3·8 = 24 — the exponent first, the coefficient after.
Where people slip
The base carries the exponent; the coefficient never does.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
- Nothing. This is a starting point.
Unlocks
- Nothing yet depends on this.
Something wrong in this lesson? Flag it · Sources for College Algebra