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MATH 2280 -
MATH 2280 lecture Notes
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(3)(1) (2)(4) Math 2280-2, Fall 2008, Broken air conditionera080 : a15 : a25 sqrt 3 :12: k 0.2 :A t =a0a1cos t a2sin tA t = 80 5 cos112 t 5 3 sin112 tc1k2a1k a2k22; c2k a1k2a2k22; 0.20 0.08333333335 30.041144 20.08333333335 0.20 30.041144 2evalf c1; evalf c2;2.3351056245.603607925A t a0a1cos t a2sin t ; u t, u0 a0c1cos t c2sin t u0 a0c1exp k t ; t a0a1 cos t a2 sin tt, u0 a0c1 cos t c2 sin t u0 a0c1 ek tplot u t, 70 , u t, 60 , u t, 65 , A t , t=0 ..72, title=‘broken air conditioner in Athens‘ ;t0 10 20 30 40 50 60 7060708090broken air conditioner in
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