Max Curvature Points on y=ex & xy=1 - Help Needed!

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SUMMARY

The discussion focuses on finding maximum curvature points for the curves defined by the equations y=e^x and xy=1. The curvature formula provided is \(\kappa=\frac{|\mathbf{r}'\times\mathbf{r}''|}{|\mathbf{r}'|^3}\), which is essential for calculating curvature. Users are advised to derive the curvature for each curve and then optimize it to identify maximum points. The conversation highlights the importance of understanding curvature formulas and their application in optimization problems.

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Giuseppe
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Hello, I just learned how to do these types of problems, but I'm having trouble. Can some one direct me through this problem?

Find the point or points on the curve which the curvature is a maximum for

a. y=ex
b. xy=1

any help is greatly appreciated. I really am stuck here!
 
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Giuseppe said:
Hello, I just learned how to do these types of problems, but I'm having trouble. Can some one direct me through this problem?

Find the point or points on the curve which the curvature is a maximum for

a. y=ex
b. xy=1

any help is greatly appreciated. I really am stuck here!

Is that ex or ex?

Do you know the formula for curvature? If so, find the curvature of each, then optimize it! If not, then that is what you should look up first :smile:

By the way, like I have mentioned a few times here:

\kappa=\frac{|\mathbf{r}'\times\mathbf{r}''|}{|\mathbf{r}'|^3}

You can use r = (x)i + (ex)j for the first, and the second is similar (I think you can see what it will be).
 
Last edited:
ah , i think i got it. thanks, i was being stupid
 

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