# 6. Undamped Vibrations: Solve the initial value problem for y(t). y" +y = cos(wt); w2 1;...

###### Question:

6. Undamped Vibrations: Solve the initial value problem for y(t). y" +y = cos(wt); w2 1; y(0) = 0; y'(0) = 0. (8) Plot y(t) versus t, for w= -0.2, 0.9 and 6 to observe beats and resonance.

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