- 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
1. Limits and Continuity
Finding Limits Algebraically
Problem 4e
Textbook Question
Limits and Continuity
Suppose the functions ƒ(x) and g(x) are defined for all x and that lim (x → 0) ƒ(x) = 1/2 and lim (x → 0) g(x) = √2. Find the limits as x → 0 of the following functions.
e. x + ƒ(x)

1
Understand the problem: We need to find the limit of the function x + ƒ(x) as x approaches 0, given that lim (x → 0) ƒ(x) = 1/2.
Recall the property of limits: The limit of a sum is the sum of the limits, provided the individual limits exist. This means lim (x → 0) [x + ƒ(x)] = lim (x → 0) x + lim (x → 0) ƒ(x).
Evaluate the limit of x as x approaches 0: Since x is a linear function, lim (x → 0) x = 0.
Use the given information: We know that lim (x → 0) ƒ(x) = 1/2.
Combine the results: Substitute the limits into the sum, giving us lim (x → 0) [x + ƒ(x)] = 0 + 1/2.
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