# Chain rule: Partial Differentiation at a given value

#### Horton483

##### New member
I have this really gnarly chain rule question that I cannot seem to conquer.. I'm gonna try and post a screen shot of the problem rather than type it all out. Any input would be appreciated!

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#### Subhotosh Khan

##### Super Moderator
Staff member
I have this really gnarly chain rule question that I cannot seem to conquer.. I'm gonna try and post a screen shot of the problem rather than type it all out. Any input would be appreciated!

#### stapel

##### Super Moderator
Staff member
I have this really gnarly chain rule question that I cannot seem to conquer.. I'm gonna try and post a screen shot of the problem rather than type it all out. Any input would be appreciated!
The screenshot isn't working. To learn how to type math as text, please try here. For instance, the following:

. . . . .$$\displaystyle f(x)\, =\, \left(\dfrac{x\, +\, 2}{e^{3x}}\right)^2$$

...could be typeset as:

. . . . .f(x) = [(x + 2) / (e^(3x))]^2

When you reply, please include a clear listing of your thoughts and efforts so far, so we can see where you're getting stuck. Thank you!