Remember that to show that A is a subset of B that you must show that every element of A also belongs to B, and that to show that two sets A and B are equal you must show both that A is a subset of B and that B is a subset of A. Recall that for 7(b) it might be easiest to assume the opposite of their conclusion and deduce a contradiction. Additionally show that the union operator distributes over the intersection operator.
Remember that you may work in pairs and hand in one paper with two names on it if you wish. Working this way can be helpful.
Remember that you may work in pairs and hand in one paper with two names on it if you wish. I encourage you to try it out.
Remember that you may work in pairs and hand in one paper with two names on it if you wish. I encourage you to try it out.
Also, show that f(x)=2/Pi*sqrt(1-x*x) for -1<=x<=1 is a legitimate density function. Hint: try trig substitution.