key term - Power Rule

Definition

The power rule is a fundamental concept in calculus that describes the derivative of a function raised to a power. It is a key tool used in the differentiation of various functions, including logarithmic, binomial, and limit-based functions.

5 Must Know Facts For Your Next Test

1. The power rule states that the derivative of a function raised to a power is equal to the power multiplied by the function raised to the power minus one, multiplied by the derivative of the function.
2. The power rule is widely applicable in the context of logarithmic functions, as the logarithm of a number raised to a power is equal to the power multiplied by the logarithm of the number.
3. In the binomial theorem, the power rule is used to differentiate the individual terms, which are raised to various powers, in order to find the derivative of the entire binomial expression.
4. The power rule is one of the fundamental properties of limits, as it allows for the simplification and evaluation of limits involving functions raised to powers.
5. The power rule is a crucial tool in the differentiation of functions, as it provides a straightforward method for finding the derivative of a wide range of functions, including polynomial, exponential, and trigonometric functions.

Review Questions

• Explain how the power rule is used in the context of logarithmic functions.
  • The power rule is closely tied to logarithmic functions, as the logarithm of a number raised to a power is equal to the power multiplied by the logarithm of the number. This relationship allows the power rule to be applied to differentiate logarithmic functions, where the function is raised to a power. By using the power rule, the derivative of a logarithmic function can be easily calculated, which is an essential skill for understanding and working with logarithmic functions.
• Describe how the power rule is utilized in the binomial theorem.
  • The binomial theorem involves the expansion of expressions in the form $(a + b)^n$, where $n$ is a positive integer. Each term in the binomial expansion is raised to a power, and the power rule is used to differentiate these individual terms. By applying the power rule to each term, the derivative of the entire binomial expression can be found, which is crucial for understanding the behavior and properties of binomial functions.
• Analyze how the power rule is applied in the context of finding limits.
  • The power rule is one of the fundamental properties of limits, as it allows for the simplification and evaluation of limits involving functions raised to powers. By applying the power rule, the limit of a function raised to a power can be reduced to the power multiplied by the limit of the function raised to the power minus one, multiplied by the limit of the derivative of the function. This simplification process is essential for understanding and working with limits, which are a crucial concept in calculus.

Related terms

Derivative:

The derivative of a function represents the rate of change of the function at a specific point, and is a central concept in calculus.

Differentiation:

The process of finding the derivative of a function, which allows for the analysis of the function's behavior and properties.

Exponent:

The power to which a base number is raised, indicating the number of times the base is multiplied by itself.