How do I find the Mass and Center of Mass of a bounded lamina?

I've managed to determine that :

y = lnx

y = 0

x = 1

x = e

I calculated the density at p=k/x

After integrating what's the best approach to find center of mass and mass of the lamina?

[Image Analyst]

You have 4 variables x, y, p, and k. What is "lamina"? How did you determine that a single scalar y can simultaneously have two values? Same for x. How can x be both 1 and e? It cannot, at least not at the same time. It can at different times though. Do you have some sort of vector of values or are you computing/determining/assigning them in a loop? Answer after you re-read the posting guidelines:

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