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Solver can then be invoked to drive cell D17 to zero by varying B11:B14. The result is as shown in the spreadsheet along with a plot. 27.21 (a) First, the 2nd-order ODE can be reexpressed as the following system of 1st-order ODE’s. Next, we create an M-file to hold the ODEs: function dx=spring(t,y) ................
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