h*********g
发帖数: 106 | 1 There is a function
P=1/(1+a*(exp(b*z)-1))
The constant a and b are greater than zero (0), and z is between [0, 100], P
is between [0,1]
Can you find the point where
1-P+z*(dP/dz)=0
附件有word 格式文本 | h*********g
发帖数: 106 | 2 There is a function
P=1/(1+a*(exp(b*z)-1))
The constant a and b are greater than zero (0), and z is between [0, 100], P
is between [0,1]
Can you find the point where
1-P+z*(dP/dz)=0 | b*******g
发帖数: 363 | 3
P
by Maple
(-1-2*a*exp(b*z)+2*a-a^2*exp(2*b*z)+2*a^2*exp(b*z)-a^2+z*a*b*exp(b*z))/(-1-2
*a*exp(b*z)+2*a-a^2*exp(2*b*z)+2*a^2*exp(b*z)-a^2)
【在 h*********g 的大作中提到】
: There is a function
: P=1/(1+a*(exp(b*z)-1))
: The constant a and b are greater than zero (0), and z is between [0, 100], P
: is between [0,1]
: Can you find the point where
: 1-P+z*(dP/dz)=0
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