MATH 2421-001 -- Calculus III
Summer 2006 Semester
DPGraph Section 10.2

• Example #1:   graph3d( z = sin(sqrt(x^2 + y^2)/sqrt(x^2 + y^2) )
  This would be similar to the single-variable function  f(r) = sin(r)/r
  if we used polar variables.  We know that the limit would be 1.
  We see that the two-variable function surface would be continuous
  if we defined f(0,0) = 1.
  
• Problem #10:   graph3d( z = 2*x*y/(x^2 + 2*y^2) )
  Notice that all multiplications must be represented with an asterisk!
  
• Problem #40:   graph3d( z = tan(x + y) )
  x, y, and z:  [-5, 5]

Send comments to:  mkawai@math.cudenver.edu
Last modified on 2 July 2006.