Question

If l:m =
$3 \times \frac{1}{2} \: and \: 3 \times \frac{3}{4}$
m:n =
$1 \times \frac{1}{3 \: } \: and \: 2 \times \frac{1}{5}$
then find
a. l:n
b. l:m:n​

Answer 1

Answer:

fXY(x,y)=∫∞−∞fXYZ(x,y,z)dz=∫1013(x+2y+3z)dz=13[(x+2y)z+32z2]10=13(x+2y+32),for0≤x,y≤1.

Thus,