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

2. Intro to Derivatives

Tangent Lines and Derivatives

Calculus

2. Intro to Derivatives

Tangent Lines and Derivatives

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Multiple Choice

Find an equation of the tangent line to the graph of $f (x) = x^{2} + 2 x$ at the point where $x = 1$ .

y = 2 x + 1

y = 4 x - 1

y = 3 x + 2

y = x^{2} + 2 x

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Verified step by step guidance

Step 1: Recall that the equation of a tangent line to a curve at a given point is given by y = f'(x₀)(x - x₀) + f(x₀), where x₀ is the x-coordinate of the point of tangency.

Step 2: Compute the derivative of the function f(x) = x² + 2x to find f'(x). The derivative of x² is 2x, and the derivative of 2x is 2. Therefore, f'(x) = 2x + 2.

Step 3: Evaluate f'(x) at x = 1 to find the slope of the tangent line. Substitute x = 1 into f'(x): f'(1) = 2(1) + 2.

Step 4: Find the y-coordinate of the point of tangency by evaluating f(x) at x = 1. Substitute x = 1 into f(x): f(1) = (1)² + 2(1).

Step 5: Use the slope from Step 3 and the point (x₀, f(x₀)) from Step 4 to write the equation of the tangent line in point-slope form: y - f(x₀) = f'(x₀)(x - x₀). Simplify this equation to obtain the final equation of the tangent line.