Suppose that the random variable x obeys the uniform distribution on the interval [- 1,1], then the probability density of y = 2-x is obtained

It is known that f (x) = 1 / 2, (- 1)

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1. Let the random variables X and y be independent and obey the uniform distribution on the interval [0, a], and then calculate the probability density of the random variable z = x / y
2. If the random variables X and y are independent of each other and obey the uniform distribution on the interval (0,1), then the following random variables obey the uniform distribution A.x & # 178; b.x + y, C. (x, y) d.x-y, please give me a process,
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