How to Use the Squeeze Theorem (and when!)

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17 Terms

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Squeeze Theorem

A fundamental tool in calculus used to evaluate limits of functions by 'squeezing' a function between two simpler functions.

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Bounding Functions

Two functions g(x) and h(x) that trap the function f(x) such that g(x) ≤ f(x) ≤ h(x) within a given interval.

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Oscillatory Functions

Functions that exhibit fluctuating behavior, making direct limit evaluation challenging.

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Limit

The value that a function approaches as the input approaches a specified value.

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Discontinuities

Points at which a function is not continuous, leading to irregular behavior.

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Convergence

The property of a sequence or function approaching a specific value as the input approaches a certain point.

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g(x) ≤ f(x) ≤ h(x)

The notation indicating that function f(x) is bounded above by h(x) and below by g(x).

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Evaluate limits

The process of determining the value that a function approaches as its input approaches some value.

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Small Perturbations

Small additive or multiplicative terms that complicate direct computation but diminish effect as x approaches a specific point.

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Application of the Squeeze Theorem

Utilizing the theorem to find limits in situations where direct computation is challenging due to oscillation or irregular behavior.

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Common Mistakes in Squeeze Theorem

Failing to establish valid bounds or mismatching limits when applying the theorem.

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Physics Applications

Using the Squeeze Theorem in analyzing small oscillations or limits in wave equations.

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Engineering Applications

Utilizing the Squeeze Theorem in studying systems with bounded perturbations.

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Mathematics Applications

Using the theorem to prove limit-related theorems and establish convergence in calculus.

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Conclusion of Squeeze Theorem

If g(x) and h(x) converge to the same limit, then f(x) will also converge to that limit.

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Steps to Apply the Squeeze Theorem

  1. Identify bounding functions, 2) Check validity of inequalities, 3) Calculate limits of the bounds, 4) Conclude using the theorem.

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Intuition Behind the Squeeze Theorem

If f(x) is trapped between g(x) and h(x) as both approach the same limit, then f(x) approaches that limit too.