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🤙🏽AP Calculus AB/BC Unit 3 Vocabulary

19 essential vocabulary terms and definitions for Unit 3 – Composite, Implicit, and Inverse Functions

Study Unit 3
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🤙🏽Unit 3 – Composite, Implicit, and Inverse Functions
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🤙🏽Unit 3 – Composite, Implicit, and Inverse Functions

3.1 The Chain Rule

TermDefinition
chain ruleA differentiation rule that provides a method for finding the derivative of a composite function by multiplying the derivative of the outer function by the derivative of the inner function.
composite functionA function formed by combining two functions where the output of one function becomes the input of another.
derivativeThe instantaneous rate of change of a function at a specific point, representing the slope of the tangent line to the function at that point.
differentiable functionFunctions that have a derivative at every point in their domain, meaning they are smooth and continuous without sharp corners or breaks.

3.2 Implicit Differentiation

TermDefinition
chain ruleA differentiation rule that provides a method for finding the derivative of a composite function by multiplying the derivative of the outer function by the derivative of the inner function.
derivativeThe instantaneous rate of change of a function at a specific point, representing the slope of the tangent line to the function at that point.
implicit differentiationA technique for finding the derivative of a function defined implicitly by differentiating both sides of an equation with respect to the independent variable.
implicitly defined functionA function defined by an equation relating x and y, where y is not explicitly solved in terms of x.

3.3 Differentiating Inverse Functions

TermDefinition
chain ruleA differentiation rule that provides a method for finding the derivative of a composite function by multiplying the derivative of the outer function by the derivative of the inner function.
derivativeThe instantaneous rate of change of a function at a specific point, representing the slope of the tangent line to the function at that point.
inverse functionA function that reverses the effect of another function, such that if f(a) = b, then the inverse function f⁻¹(b) = a.
inverse trigonometric functionsFunctions that reverse the action of trigonometric functions, such as arcsine, arccosine, and arctangent, which return an angle given a trigonometric ratio.

3.4 Differentiating Inverse Trigonometric Functions

TermDefinition
chain ruleA differentiation rule that provides a method for finding the derivative of a composite function by multiplying the derivative of the outer function by the derivative of the inner function.
derivativeThe instantaneous rate of change of a function at a specific point, representing the slope of the tangent line to the function at that point.
inverse functionA function that reverses the effect of another function, such that if f(a) = b, then the inverse function f⁻¹(b) = a.
inverse trigonometric functionsFunctions that reverse the action of trigonometric functions, such as arcsine, arccosine, and arctangent, which return an angle given a trigonometric ratio.

3.6 Calculating Higher-Order Derivatives

TermDefinition
first derivativeThe derivative of a function, denoted f', which describes the rate of change and indicates where a function is increasing or decreasing.
higher-order derivativesDerivatives of derivatives obtained by repeatedly differentiating a function; the second derivative, third derivative, and beyond.
second derivativeThe derivative of the first derivative, denoted f'', which describes the concavity of a function and indicates where it is concave up or concave down.