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Plot module: example strophoid

This example of the plot of a strophoid shows how to deal with polar coordinates. The function of the strophoid is:

• We declare the constant:
  • a = 5
• We activate the polar coordinate system by clicking on the "Coordinate system" button
• For the plot we have choosen the following input parameters:
  • Variable: phi
  • Start value: 0
  • End value: 6.28
  • Step width: 0.01
• We enter the function:
  • strophoide=-a*cos(2*phi)/cos(phi)
• We finalize the input with the return key or by clicking on the "Run!" button
• The function is then plotted

The graph shows the strophoid for different values of a.

(To plot module)    (To MAR Plus)