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I have used MathCAD for years, but not with differential equations. I have a defined function, with only one variable (z), that I requre the 1st, 2nd and 3rd derivative of theta, and I only need their values at z = l/2, which is 90 inches in this example. Aside from the trigonometric functions in the function definition, I didn't think this would be such a problem for MathCAD. Is there a simple way to obtain the solutions I require in MathCAD? (I have attached the example worksheet)
Try to specify the function θ argument θ(z).
That solves my problem! I guess I need to brush up on this function in MathCAD.
Thank you very much.
Define theta as a function of z. Mathcad can then develop the derivatives and evaluate them.
I've butchered your worksheet (sorry), but you can see the results.