Desmos Demonstrations
class examples demonstrations/illustrations using the 3D grapher Desmos
prepared by Prof. Girardi
Math 241
Spring 2025

Current Desmos Demonstrations    (just click on the linked number)

1. 12.1.1 Cartesian Coordinate System (3D space)  (intro. to 3D xyz coordinate axes and coordinate planes)
2. 12.1.2 Plotting points 3D Cartesian/Rectangular xyz-space
3. 12.1.3 Equalities and Inequalites in 3D  (eg, x+y=3 vs x+y ≤ 3)
4. 12.1.4 Paper Towel roll  
5. 12.1.5 spheres, distance, midpoint
6. 12.6.1 Examples of Cylinders
7. 12.2.1 2D moving vetcors to standard position
8. 12.2.2 3D moving vetcors to standard position
9. 12.2.3 vector algebra
10. 13.1.1 Helix (and the Grinch)
11. 13.1.2 tangent lines to (elliptic) curves
12. 13.3.1 Review: approximate area by Riemann sums
13. 13.3.2 approximate (arc) length by polygonal path (of line segments)
14. 13.4.1 Helix path: Unit Tangent Vector and Unit Principle Normal Vector
15. 14.1.1 Level Sets
16. 14.2.1 Two-path test for non-existence of limits
17. 14.3.1 geometric interpretation of partial derivatives (hemisphere)
18. 14.5.1 geometric interpretation of directional derivatives (cone)
19. 14.5.2 Directional Derivatives: gradient vector and level sets (cone)
20. 14.7.1+2 Max/Min: Ex. 1 and Ex 2.
21. 14.7.3 Max/Min: Ex. 3: tooth
22. 15.1.1 Review Definite Integral of function y=f(x) of one variable.
23. 15.1.2 Double Integral of function z=f(x,y): what does it represent?
24. 16.4.1 16.4: For Exerices 16.4.33 astroid

Empty Desmos Pages  (in case you want to use Desmos yourself). The ⊕ indicates link should open in new tab/window.
3D Desmos Grapher⊕	2D Desmos Grapher⊕ can label items

Past Desmos Demonstrations

1. 12.1.2 24s Visualizing equations and surfaces. (24S. 24F MadeIntoPaperTowelRoll=needsSplitingUp)
2. 13.1.1 Helix and Grinch (24S. also has < cos(5t), sin(5t), t >)
3. 14.5.1 Gradient (24S. hemisphere)