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$x+y\leq 1$ find $Px,y(x|y)$ for solid triangle?

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    plz answer me as soon as possible,i would be grateful to you. Thanks....2012-12-28
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    It is best not to ask for speed in answering.2012-12-28
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    As you can tell from the answer given, it is difficult to guess what you are asking, could you please **edit** your question to state clearly what you want to know, what the **definitions** are and what you have **tried** so far.2012-12-28

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