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math105(½ð±Ò+1): лл²ÎÓëÌÖÂÛ 2011-04-29 09:58:58
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Originally posted by jiaqiaojuan at 2011-04-23 13:11:16:
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math105(½ð±Ò+1): »¶Ó­²ÎÓëÌÖÂÛÎÊÌâ 2011-05-01 22:05:46
1/2*2^(1/2)/a^(1/2)*exp(-1/2*x)*(-besseli(1,2*2^(1/2)*a^(1/2)*exp(-1/2*x))+i*C1*bessely(1,2*i*2^(1/2)*a^(1/2)*exp(-1/2*x)))/(C1*bessely(0,2*i*2^(1/2)*a^(1/2)*exp(-1/2*x))+besseli(0,2*2^(1/2)*a^(1/2)*exp(-1/2*x)))
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y=dsolve('Dy+2*a*y^2=exp(-x)','x')
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12Â¥2011-05-01 17:23:56
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