Question

Solve the following system of equations in x and y
$\: \: \: \: \: \: \: \: \: \: \: \: \: \:$


$\tt{ax + by = 1}$
$\tt{bx + ay = \frac{ {(a + b)}^{2} }{ {a}^{2} + {b}^{2} } - 1 \: \: or \: \:}bx + ay = \frac{2ab}{ {a}^{2} + {b}^{2} }$

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Answer 1

Answer:

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6.1.6 Solved Problems

Problem

Let X,Y and Z be three jointly continuous random variables with joint PDF

fXYZ(x,y,z)=⎧⎩⎨⎪⎪13(x+2y+3z)00≤x,y,z≤1otherwise

Find the joint PDF of X and Y, fXY(x,y).

Solution