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
1. Limits and Continuity
Finding Limits Algebraically
Problem 59
Textbook Question
Evaluate each limit.
lim x→0 e^4x−1 / e^x−1
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1
Step 1: Recognize that the limit is in an indeterminate form 0/0 as x approaches 0. This suggests that L'Hôpital's Rule might be applicable.
Step 2: Apply L'Hôpital's Rule, which states that if the limit of f(x)/g(x) as x approaches a point results in an indeterminate form, then the limit can be found by taking the derivative of the numerator and the derivative of the denominator separately.
Step 3: Differentiate the numerator e^{4x} - 1 with respect to x. The derivative of e^{4x} is 4e^{4x}, and the derivative of -1 is 0.
Step 4: Differentiate the denominator e^x - 1 with respect to x. The derivative of e^x is e^x, and the derivative of -1 is 0.
Step 5: Substitute the derivatives back into the limit expression and evaluate the new limit: lim x→0 (4e^{4x}) / (e^x). Simplify the expression and evaluate the limit as x approaches 0.
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