How to find the value of x for certain y(x)

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YU ZHU
YU ZHU 2018-1-30
编辑： James Tursa 2018-1-30
I have a function y=26669/5 - 5000*exp((7*x)/5) And I want to know when y=1, what is the value of x.

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James Tursa
James Tursa 2018-1-30
编辑：James Tursa 2018-1-30
This can easily be solved by hand
x = 5*log((-y+26669/5)/5000)/7;

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