2 sinnt CF 1 do T. 21 21 sinnt dt TI 21 211 tsinnt do N 21 TF t cos nt COS nt do 21
20 - 2T COS 21 D Sint 27 n 14 - 2T COS21A sin 21 2 2 TT n n 1 sin 21 - 21n cos 2012 2. TT = In
2 sinnt CF 1 do T. 21 21 sinnt dt TI 21 211 tsinnt do N 21 TF t cos nt COS nt do 21 20 - 2T COS 21 D Sint 27 n 14 - 2T
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2 sinnt CF 1 do T. 21 21 sinnt dt TI 21 211 tsinnt do N 21 TF t cos nt COS nt do 21 20 - 2T COS 21 D Sint 27 n 14 - 2T
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