Question: Ratio distribution?

I was trying to extend these www.mapleprimes.com/forum/probfunctioneasytaskfailed ideas to compute the ratio distribution function of two r.v.'s, something along these mathworld.wolfram.com/RatioDistribution.html lines. So how do I do that with Maple, say for the ratio of two independent zero-trancated Geometrical r.v.'s? Or how do I obtain with Maple the distribution of the reciprocal of such a random variable?Thanks.

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