Very true. While some university's won't automatically wave tuition and offer stipends, there are plenty reputable ones that do. In fact, nearly all of my friends who graduated this past year going on to attend graduate school have had their tuition waved and are getting a salary from ta'ing and...
A farmer has two miles of fence, and wants to enclose the max possible area for his cows. He will use fence on only three sides because the fourth side is a river that flows through his land. The path of the river is the parabola y=4-x^2. One of the ends of the fence is on the vertex of the...