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→Main Problems
'''3.''' Consider the shape described by <math>z=-2x+\frac{y}{2} \ </math> and <math>x=t, y=\frac{t}{3}, z=-t \ </math>. What are these two shapes? Do they intersect? Where?
'''3.''' Consider the shape described by <math>z=-2x+\frac{y}{2} \ </math> and <math>x=t, y=\frac{t}{3}, z=-t \ </math>. What are these two shapes? Do they intersect? Where?
'''4.''' Sketch some level curves in the plane of <math>f(x,y) = \frac{\cos(x^2 + y^2)}{2} \ </math>. Sketch the surface <math>z=f(x,y) \ </math>.
==Challenging Problems==
==Challenging Problems==