Question: 20. Consider the tapered bar in Problem 17. Use the Rayleigh-Ritz method to solve the same prob lem. Assume the displacement in the form of

20. Consider the tapered bar in Problem 17. Use the Rayleigh-Ritz method to solve the same prob¬

lem. Assume the displacement in the form of u(x) = ag + aix + azx2. Compare the solutions for u(x) and Fix) with the exact solution given below by plotting them.

«(*) = P{x) = EAix) — = F K ' jr&(0) ;•(*)' w y ' dx

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