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Question: Problem with imaginary numbers

Question:Problem with imaginary numbers

MapleRuth 5 Maple
October 12 2016
1

Hello,

 

I have a function:

v0(t) = -g*t-vs*ln(r*t-m0)+vs*ln(-m0)

This function should be equal to 300, but when using fsolve we get a negative real part, and a very small imaginary part:

We have already made a plot of the function, and from that we see that the t should be about 65 when v0(t)= 300.

 

What are we doing wrong?

Is there a way to extract the data from the graph?
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