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
3. Techniques of Differentiation
Product and Quotient Rules
Problem 3.4.52
Textbook Question
Derivatives Find and simplify the derivative of the following functions.
g(x) = x⁴/³-1 / x⁴/³+1
![](/channels/images/assetPage/verifiedSolution.png)
1
Step 1: Identify the function g(x) = \frac{x^{4/3} - 1}{x^{4/3} + 1}. This is a rational function, so we will use the quotient rule to find its derivative.
Step 2: Recall the quotient rule for derivatives: if you have a function h(x) = \frac{u(x)}{v(x)}, then h'(x) = \frac{u'(x)v(x) - u(x)v'(x)}{(v(x))^2}. Here, u(x) = x^{4/3} - 1 and v(x) = x^{4/3} + 1.
Step 3: Differentiate u(x) and v(x) with respect to x. For u(x) = x^{4/3} - 1, the derivative u'(x) = \frac{4}{3}x^{1/3}. For v(x) = x^{4/3} + 1, the derivative v'(x) = \frac{4}{3}x^{1/3}.
Step 4: Substitute u(x), v(x), u'(x), and v'(x) into the quotient rule formula: g'(x) = \frac{(\frac{4}{3}x^{1/3})(x^{4/3} + 1) - (x^{4/3} - 1)(\frac{4}{3}x^{1/3})}{(x^{4/3} + 1)^2}.
Step 5: Simplify the expression for g'(x) by expanding and combining like terms in the numerator, and ensure the denominator is correctly squared.
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