No Title

NAME:

Quiz 2, Math 223, Section 2, 9-4-98

Match the graph to the equation.

A. $z = xye^{-\frac{1}{2}(x^2+y^2)}$ B. $z = \sin(\sqrt{x^2+y^2})$ C. $z = \cos y$

D. $z = -\frac{1}{\sqrt{x^2+y^2}}$ E. $\sin^2x \sin^2y$ F. $z = \frac{\sin(2x^2+y^2)}{x^2+y^2}$

G. $z = \cos(xy)$ H. z = |x||y|
I. z = (x²+2y²)e^1-x²-y²

Vector Calculus
9/10/1998

A. $z = xye^{-\frac{1}{2}(x^2+y^2)}$	B. $z = \sin(\sqrt{x^2+y^2})$	C. $z = \cos y$
D. $z = -\frac{1}{\sqrt{x^2+y^2}}$	E. $\sin^2x \sin^2y$	F. $z = \frac{\sin(2x^2+y^2)}{x^2+y^2}$
G. $z = \cos(xy)$	H. z = \|x\|\|y\|	I. z = (x²+2y²)e^1-x²-y²