How Do You Solve the Limit of (x^(1/3) - 4)/(x - 64) as x Approaches 64?

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Homework Help Overview

The discussion revolves around evaluating the limit of the expression (x^(1/3) - 4)/(x - 64) as x approaches 64, which falls under the subject area of calculus, specifically limits and continuity.

Discussion Character

  • Exploratory, Assumption checking, Mathematical reasoning

Approaches and Questions Raised

  • Participants explore different methods to resolve the indeterminate form 0/0, including taking the derivative and factoring the expression as a difference of cubes. There is also a mention of constraints regarding the algebraic approach required by the problem.

Discussion Status

Some participants have provided hints and suggestions for resolving the limit, while others have expressed constraints related to the problem's requirements. The discussion appears to be productive, with multiple approaches being considered.

Contextual Notes

One participant notes that the problem specifies finding the limit algebraically, which restricts the use of derivatives in the solution process.

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Homework Statement



limx->64 (x^1/3 - 4)/(x - 64)

Homework Equations





The Attempt at a Solution


(64^1/3 -4)/(64 - 64) = 0/0 = not defined
 
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Take the derative of f(x) = x^1/3 -4 at x = 64.
 
Or factor ##x-64## as the difference of two cubes.
 
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Thanks. I am trying to help my daughter with AP calculus. The problem states to find the limit algebraically so I cannot take the derivative.
 
LC Kurtz gave you the hint: use the decomposition a3-b3
 
We got it. Thanks a lot you guys
 

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