Limits

Hi!

This isn't too bad, but I just want to make sure that I have this right.

I'm trying to find the

limit (as h->0) of (yh^3-hy^3)/(h^3+hy^2)

I'm getting -hy. But next I need to calculate the second partial derivative (which was what I was doing in the first place using the limit definition) with respect to y. But obviously I'm getting 0, which I don't think is right.

Thanks!

If h is going to 0, and you are getting the limit to be -hy, doesn't that mean that it is 0?

Quote:

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Originally Posted by EricaMae

Hi!

This isn't too bad, but I just want to make sure that I have this right.

I'm trying to find the

limit (as h->0) of (yh^3-hy^3)/(h^3+hy^2)

I'm getting -hy. But next I need to calculate the second partial derivative (which was what I was doing in the first place using the limit definition) with respect to y. But obviously I'm getting 0, which I don't think is right.

Thanks!

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