Finding minimum variable's density function

wldnrp13579
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Homework Statement


Let X and Y be independent and suppose that each has a Uniform (0,10) distribution.
Let Z = min{X, Y }. Find the density fZ(z) for Z.


Homework Equations





The Attempt at a Solution


i'm sorry but i really don't know how to handle this.
 
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Start by finding the cdf.
 
if x and y both have same uniform distribution, then z has the same distribution as x and y?
 
wldnrp13579 said:
if x and y both have same uniform distribution, then z has the same distribution as x and y?

What are your reasons for thinking this? Have you actually computed the distribution?
 
wldnrp13579 said:
if x and y both have same uniform distribution, then z has the same distribution as x and y?
FX(x) is the probability of what? Likewise, FZ(z).
 
There are two things I don't understand about this problem. First, when finding the nth root of a number, there should in theory be n solutions. However, the formula produces n+1 roots. Here is how. The first root is simply ##\left(r\right)^{\left(\frac{1}{n}\right)}##. Then you multiply this first root by n additional expressions given by the formula, as you go through k=0,1,...n-1. So you end up with n+1 roots, which cannot be correct. Let me illustrate what I mean. For this...
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