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y=A1*exp(-x/t1)+A2*exp(-x/t2)+A3*exp(-x/t3)+y0
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3Â¥2016-06-23 10:34:14
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3Â¥: Originally posted by peterflyer at 2016-06-23 10:34:14
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y=A1*exp(-x/t1)+A2*exp(-x/t2)+A3*exp(-x/t3)+y0
y'=-A1/t1*exp(-x/t1)-A2/t2*exp(-x/t2)-A3/t3*exp(-x/t3)
y¡®¡¯=A1/t1^2*exp(-x/t1)+A2/t2^2*exp(-x/t2)+A3/t3 ...

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