[begin{array}{l}
dZ = 2({b_1}{e_1} + {b_2}{e_2})t{B^{ - 1}}frac{{dB}}{{dt}}dt \
\
dZ = 2({b_1}{e_1} + {b_2}{e_2})tYdt \
\
2Y = frac{{dZ}}{{dY}} - 2({b_1}{c_1} + {b_2}{c_2})frac{{dB}}{{dY}} \
\
2 + 2({b_1}{c_1} + {b_2}{c_2})Bfrac{{dt}}{{dB}}frac{{dB}}{{dY}} = 2({b_1}{e_1} + {b_2}{e_2})tfrac{{dt}}{{dY}} \
1 + ({b_1}{c_1} + {b_2}{c_2})Bfrac{{dt}}{{dY}} = ({b_1}{e_1} + {b_2}{e_2})tfrac{{dt}}{{dY}} \
frac{{dY}}{{dt}} = {K^{ - 1}} \
1 + ({b_1}{c_1} + {b_2}{c_2})BK = ({b_1}{e_1} + {b_2}{e_2})tK \
B = frac{{({b_1}{e_1} + {b_2}{e_2})tK - 1}}{{({b_1}{c_1} + {b_2}{c_2})K}} \
end{array}]
现在看起来大概也就是简化到这个程度,或许这个方程不存在精确解?
https://blog.sciencenet.cn/blog-361477-571097.html
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