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f-x-y-x-y-0-lt-x-lt-1-0-lt-y-lt-1-0-otherwise-find-1-xy-2-p-0-lt-x-lt-1-4-2-5-gt-y-gt-1-3-note-f-x-y-is-the-joint-PDF-




Question Number 187044 by Humble last updated on 12/Feb/23
f(x,y)={(x+y),0<x<1, 0<y<1                         0, otherwise  find:  (1) σxy    (2)  p(0<x<((1/4))∣((2/5))>y>((1/3)))    note: f(x,y) is the joint PDF
$${f}\left({x},{y}\right)=\left\{\left({x}+{y}\right),\mathrm{0}<{x}<\mathrm{1},\:\mathrm{0}<{y}<\mathrm{1}\right. \\ $$$$\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\mathrm{0},\:{otherwise} \\ $$$${find}: \\ $$$$\left(\mathrm{1}\right)\:\sigma{xy} \\ $$$$ \\ $$$$\left(\mathrm{2}\right)\:\:{p}\left(\mathrm{0}<{x}<\left(\frac{\mathrm{1}}{\mathrm{4}}\right)\mid\left(\frac{\mathrm{2}}{\mathrm{5}}\right)>{y}>\left(\frac{\mathrm{1}}{\mathrm{3}}\right)\right) \\ $$$$ \\ $$$${note}:\:{f}\left({x},{y}\right)\:{is}\:{the}\:{joint}\:{PDF} \\ $$

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