Suppose that X and Y have joint density function ƒx,x (x, y) = (x + 4y) for 0 < x < 2, 0 ≤ y ≤ 1 (and fx,y (x, y) = 0 otherwise). Determine Cov (X, Y), the covariance of X and Y. (b) (c) - 1 81 (d) - 10 9 (e) None of the above

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Q: 6. Show that f(x) = sin x is uniformly continous on R.

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Q: 1. Let f(u, v) be a continuously differentiable function. Let u = e*, v = e³. Show that u²fuu + v²…

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Q: 5. The fraction X of faculty and the fraction Y of students at a local high school is described by…

A: Question 5)The joint density function of and  is,