Originally Posted by

**cubew00t** Hello, nice to meet you all, I've been working on a spreadsheet that requires me to create a function to determine a value from a exponential curve where the area of the curve is variable . The terminal points, 0,0 and 100,100 remain constant and the curve is symmetrical at the 45degree angle. How can I derive a function knowing only these things. Thanks!

from asking other places this is probably not an exponential function, this image better describes what i am looking for:

can this be expressed mathematically to solve for x and y ?