Question: I need help on how to solve this. Please... Suppose that a continuous random variable X has a probability density function given by if x50

I need help on how to solve this. Please...

Suppose that a continuous random variable X has a probability density function given by if x50 2x f ( x, y) = if 0 R Find the variance of X.Find the following probabilities if the joint probability density function of X and Y is given g! _ 261623\" if0 1, Y 1)

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