Exeter calculus Kuhlmann: applets created by participants

Doug Kuhlmann, 21/06/2015


  • 1. The rate of change of a shadow
  • 2. Average Rate Of Change
  • 3. Differentiation Prob Monday June 22
  • 4. Motion of a Particle in 1-Dimension (second try)
  • 5. Tangent Fields & Isoclines
  • 6. Finding Derivative using Curve Fitting
  • 7. u-substitution 4
  • 8. AP Calculus AB: Average Value of a Function
  • 9. Differentiation from First Principles
  • 10. Intermediate Value Theorem
  • 11. Exploring the Mean Value Theorem #1
  • 12. PolarGraphFilledWithMike
  • 13. Polar Graph Filled With Tom

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The rate of change of a shadow

A man running from a street lamp.

A street lamp is 8m high. A man of height 1.6m walks along the street away from the lamp at a steady rate of 1 m/s. At what rate is the length of his shadow changing?
– Mark Willis, Doug Kuhlmann

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