Let u(x, y) be the 2-variable function u(x, y) = (x + 2)y − exp(x + y). (a) Find the partial derivatives ux, uy, uxx, uyy, and show that uxy = uyx.
(b) Show that u has a stationary point for y = 1. Determine the corresponding value
of x and the character of the stationary point.

The center of the circumscribed circle lies on line segment and the longest side of the triangle is equal to the of the circle.

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?

You just purchased two coins at a price of $670 each. because one of the coins is more collectible, you believe that its value will increase at a rate of 7.1 percent per year, while you believe the second coin will only increase at 6.5 percent per year. if you are correct, how much more will the first coin be worth in 15 years?