Derivative of T(x, y, z): Get the Answer Now!

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Homework Help Overview

The discussion revolves around finding the partial derivatives of the function T(x, y, z) = 200e^(−x^2−3y^2−9z^2). Participants express uncertainty regarding the correct approach to differentiate this function with respect to the variables x, y, and z.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants attempt to compute the derivative with respect to x, but there is confusion about the correct form of the derivative. Questions arise about the presence of certain factors in their attempts, particularly the x^2 factor.

Discussion Status

Some participants have provided corrections to the original attempts, suggesting a more accurate expression for the derivative. There is ongoing exploration of the reasoning behind these corrections, with participants questioning the validity of their initial assumptions and calculations.

Contextual Notes

There appears to be a lack of clarity regarding the terminology used for partial derivatives, as well as confusion about the application of differentiation rules. Participants are also navigating the conventions of notation in this context.

killersanta
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Homework Statement



T(x, y, z) = 200e^(−x^2−3y^2−9z^2 )
I'm not sure how to get the derivative in terms of x,y or z.



The Attempt at a Solution



For x: -200x^2e^(−x^2−3y^2−9z^2 )(-2x)? Is this right? Probably not, how do i do it?
 
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killersanta said:

Homework Statement



T(x, y, z) = 200e^(−x^2−3y^2−9z^2 )
I'm not sure how to get the derivative in terms of x,y or z.



The Attempt at a Solution



For x: -200x^2e^(−x^2−3y^2−9z^2 )(-2x)? Is this right? Probably not, how do i do it?
This is not quite the correct partial derivative of T with respect to x. That's the terminology that is usually used.

The corrected version is -200e^(−x^2−3y^2−9z^2 )(-2x)

The notation can appear in two forms:
\frac{\partial T}{\partial x}
or
Tx
 
thank you!
 
Do you understand why that x2 factor you had shouldn't be there?
 
Mark44 said:
Do you understand why that x2 factor you had shouldn't be there?

No, I thought you pulled it down? Why?
 

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