I want to multiply multiple curves (density distributions, with area under curve = 1).

For each curve, I have the x and y values, but x is identical in each curve.

All y values are < 1 and close to zero.

Thus, when multiplying the values, eventually, I reach zero.

Therefore my question:

How can I multiply (and re-normalize so that the area under the curve again = 1) the curves?

Thanks,

Patrick