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
3. Techniques of Differentiation
Basic Rules of Differentiation
Problem 3.4.19
Textbook Question
Derivatives Find and simplify the derivative of the following functions.
f(x) = 3x⁴(2x²−1)
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1
Apply the product rule for derivatives, which states that if you have two functions u(x) and v(x), then the derivative of their product is u'v + uv'. Here, let u(x) = 3x⁴ and v(x) = (2x² - 1).
Calculate the derivative of u(x) = 3x⁴. Use the power rule, which states that d/dx[x^n] = n*x^(n-1). Thus, u'(x) = 12x³.
Calculate the derivative of v(x) = (2x² - 1). Again, use the power rule. The derivative v'(x) = 4x.
Substitute u, u', v, and v' into the product rule formula: f'(x) = u'v + uv'. This gives you f'(x) = (12x³)(2x² - 1) + (3x⁴)(4x).
Simplify the expression obtained from the product rule to combine like terms and factor if possible.
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