Table of contents

0. Functions7h 52m
1. Limits and Continuity2h 2m
2. Intro to Derivatives1h 33m
3. Techniques of Differentiation3h 18m
4. Applications of Derivatives2h 38m
5. Graphical Applications of Derivatives6h 2m
6. Derivatives of Inverse, Exponential, & Logarithmic Functions2h 37m
7. Antiderivatives & Indefinite Integrals1h 26m
8. Definite Integrals4h 44m
9. Graphical Applications of Integrals2h 27m
- Area Between Curves
  1h 18m
- Introduction to Volume & Disk Method
  1h 8m
10. Physics Applications of Integrals 3h 16m
- Kinematics
  1h 13m
- Work
  2h 3m
11. Integrals of Inverse, Exponential, & Logarithmic Functions2h 34m
12. Techniques of Integration7h 39m
13. Intro to Differential Equations2h 55m
14. Sequences & Series5h 36m
15. Power Series2h 19m
- Introduction to Power Series
  1h 9m
- Taylor Series & Taylor Polynomials
  1h 10m
16. Parametric Equations & Polar Coordinates7h 58m

8. Definite Integrals

Average Value of a Function

Calculus

8. Definite Integrals

Average Value of a Function

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Multiple Choice

Let $f (x) = x^{\frac{1}{2}}$ . What is the average value of $f$ on the interval $[0, 16]$ ?

\frac{8}{3}

16

2

4

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Verified step by step guidance

Step 1: Recall the formula for the average value of a function f(x) on the interval [a, b], which is given by $ \text{Average Value} = \frac{1}{b-a} \int_{a}^{b} f(x) \, dx $.

Step 2: Identify the interval [a, b] and the function f(x). Here, $ a = 0 $, $ b = 16 $, and $ f(x) = x^{1/2} $. Substitute these values into the formula.

Step 3: Set up the integral $ \int_{0}^{16} x^{1/2} \, dx $. Recall that $ x^{1/2} $ is the same as $ x^{1/2} = x^{0.5} $. Use the power rule for integration: $ \int x^{n} \, dx = \frac{x^{n+1}}{n+1} + C $.

Step 4: Apply the power rule to compute $ \int x^{0.5} \, dx $. This gives $ \frac{x^{1.5}}{1.5} $, or equivalently $ \frac{2}{3} x^{1.5} $. Evaluate this expression at the bounds of the interval [0, 16].

Step 5: Substitute the evaluated integral result into the average value formula $ \text{Average Value} = \frac{1}{16-0} \int_{0}^{16} x^{1/2} \, dx $. Simplify the expression to find the average value of the function on the interval.