Table of contents
- 0. Functions7h 52m
- Introduction to Functions16m
- Piecewise Functions10m
- Properties of Functions9m
- Common Functions1h 8m
- Transformations5m
- Combining Functions27m
- Exponent rules32m
- Exponential Functions28m
- Logarithmic Functions24m
- Properties of Logarithms34m
- Exponential & Logarithmic Equations35m
- Introduction to Trigonometric Functions38m
- Graphs of Trigonometric Functions44m
- Trigonometric Identities47m
- Inverse Trigonometric Functions48m
- 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 Integrals3h 25m
5. Graphical Applications of Derivatives
Curve Sketching
Problem 13f
Textbook Question
Let ƒ(x) = (x - 3) (x + 3)²
f. State the x- and y-intercepts of the graph of ƒ.

1
To find the x-intercepts of the function ƒ(x), set ƒ(x) = 0 and solve for x. This means you need to solve the equation (x - 3)(x + 3)² = 0.
Identify the values of x that make each factor equal to zero. The first factor gives x - 3 = 0, leading to x = 3. The second factor (x + 3)² = 0 gives x + 3 = 0, leading to x = -3.
Thus, the x-intercepts are the points where the graph crosses the x-axis, which are (3, 0) and (-3, 0).
To find the y-intercept of the function ƒ(x), evaluate ƒ(0) by substituting x = 0 into the function: ƒ(0) = (0 - 3)(0 + 3)².
Calculate the value of ƒ(0) to find the y-intercept, which will give you the point (0, ƒ(0)).
Recommended similar problem, with video answer:

This video solution was recommended by our tutors as helpful for the problem above
Video duration:
2mPlay a video:
Was this helpful?
Watch next
Master Summary of Curve Sketching with a bite sized video explanation from Callie
Start learning