The intervals in which solutions are sure to exist for the differential equation y ( 4 ) + 4 y ‴ + 3 y = t .

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28. (a) Under what conditions do we say that two random variables X and Y are independent? (b) Demonstrate that if X and Y are independent, then it follows that E(XY) = E(X)E(Y); (e) Show by a counter example that the converse of (ii) is not necessarily true.

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Question

Chapter 4.1, Problem 1P

To determine

The intervals in which solutions are sure to exist for the differential equation y(4)+4y‴+3y=t.

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