Question

$\frac{y}{3} \: is \: 6 \: and \: \: 2x \: is \: y \: find \: y$
y/3=6 and 2x=y
Find x​

Answer 1

Answer:

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

fXYZ(x,y,z)={

1

3

(x+2y+3z) 0≤x,y,z≤1 0 otherwise

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

Answer 2

y/3 = 6

= y = 6×3

= y = 18

2x = y

2x = 18

x = 18/2

x = 9