- #1

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## Homework Statement

[/B]

Consider the equation z=6x8ln(x) where z and x are functions of t.If dx/dt=5 when x=e calculate dz/dt.

## Homework Equations

[/B]

Do I have to rearrange the equation to do this?

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- Thread starter 53Mark53
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- #1

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[/B]

Consider the equation z=6x8ln(x) where z and x are functions of t.If dx/dt=5 when x=e calculate dz/dt.

[/B]

Do I have to rearrange the equation to do this?

- #2

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Not sure what the 6x8 means. Is it 6 times 8? 6x^{8}?

- #3

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Not sure what the 6x8 means. Is it 6 times 8? 6x^{8}?

its 6x^8

- #4

Ray Vickson

Science Advisor

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## Homework Statement

[/B]

Consider the equation z=6x8ln(x) where z and x are functions of t.If dx/dt=5 when x=e calculate dz/dt.

## Homework Equations

[/B]

Do I have to rearrange the equation to do this?

## The Attempt at a Solution

It is for problems like this one that the chain rule was invented.

- #5

epenguin

Homework Helper

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At some point you will have to work out what (*ln e) *is. Possibly go back to basics and remind yourself what *ln* aka *log*_{e} __means__.

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