WeBWorK Standalone Renderer

Match each function with its graph.

1. $z = (4x^2 + 2y^2) e^{ 1-x^2 - y^2 }$

2. $z = 3 \cos^2(x) \cos^2(y)$

3. $z = |x| \, |y|$

4. $z = 4 \cos( \sqrt{x^2+y^2} )$

5. $z = \displaystyle - \frac{1}{x^2 + y^2}$

6. $z = \displaystyle \frac{ 4 \sin(x^2+y^2) }{ x^2+y^2 }$

7. $z = 6 x y e^{ - x^2 - y^2 }$

8. $z = 3 \cos(xy)$

9. $z = 3 \sin(y)$

(You can drag the images to rotate them.)

You can earn 10% partial credit for 2 - 4 correct answers, 60% partial credit for 5 - 6 correct answers, and 80% partial credit for 7 - 9 correct answers.