![3. (10 marks) Suppose X and Y are jointly continuous random variables with probability density function KVK f(x,y)= , else a) (2.5 marks) Find the constant, c, so that this is valid joint density function. b) (5 marks) Find E[XY] c) (2.5 marks) Are X and Y independent? Justify your answer citing an appropriate theorem.](https://media.cheggcdn.com/media%2Fc4c%2Fc4cb3f95-c26d-48b4-a21e-77be5c544441%2Fphp5o2sFO.png)
3. (10 marks) Suppose X and Y are jointly continuous random variables with probability density function KVK f(x,y)= , else a) (2.5 marks) Find the constant, c, so that this is valid joint density function. b) (5 marks) Find E[XY] c) (2.5
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