Thread: Another joint density problem

it seems that i cant understand the boundaries...
the joint density function:

f(u,v)= a , u^2 <= v <= 1
0 , else

find a

i just don't know how to start.
any help ?
thx

Originally Posted by wuid

i just don't know how to start.

Make a sketch. Two-dimensional, with u and v as axes. Try to find the region where f(u,v)=a.
What do you know about the integral over the function over the whole plane? Hint: Scaling of your function.