How to Determine Extrema Using the Candidates Test

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21 Terms

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Candidates Test

A reliable method for finding absolute maximum and minimum values of a continuous function on a closed interval.

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Continuous Function

A function f(x) that does not have any breaks, jumps, or points of discontinuity on the interval [a, b].

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Absolute Extrema

The highest (maximum) or lowest (minimum) values of a function over a closed interval.

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Critical Points

Points where the derivative f′(x) is zero or undefined, indicating potential locations for extrema.

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Derivative

A measure of how a function changes as its input changes; f′(x) represents the derivative of the function f(x).

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Extreme Value Theorem

States that a continuous function on a closed interval [a, b] must have at least one absolute maximum and one absolute minimum.

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Endpoints

The values a and b that define the closed interval [a, b] for the function.

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Evaluate Function

Calculate the function values f(x) at critical points and endpoints to find potential extrema.

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Largest Value

The highest result from evaluating f(x) at critical points and endpoints, identified as the absolute maximum.

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Smallest Value

The lowest result from evaluating f(x) at critical points and endpoints, identified as the absolute minimum.

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Verify Results

Ensure that the found extrema are accurate and relevant within the context of the problem.

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Real-World Implications

How the absolute extrema relate to practical situations, such as profit, cost, or efficiency in applications.

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Systematic Evaluation

A methodical approach to check all critical points and endpoints in the Candidates Test.

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Simplicity of Candidates Test

The method avoids complex analysis by focusing on evaluating a finite number of points.

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Reliability of Candidates Test

The assurance that absolute extrema are found when considering all critical points and endpoints.

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Applicability

The versatility of the Candidates Test for optimization problems in various fields like engineering, business, and physics.

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Masters of Candidates Test

The ability to use the Candidates Test effectively to address complex optimization challenges.

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Extremum

A general term for a maximum or minimum value of a function.

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Function Evaluation

The process of calculating the values of a function at given points.

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Calculus

The branch of mathematics concerned with rates of change and accumulation, which includes analysis of functions and derivatives.

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Optimization Problems

Mathematical questions that involve finding the best solution from a set of feasible solutions, often using techniques like the Candidates Test.