Array of x and y values. Find value of y when x=0, how?
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Hello. I have an assignment in school, where we got an array with x and y values to plot.
Time=[0.5:0.5:5];
A=[1.2 0.73 0.45 0.27 0.16 0.11 0.06 0.035 0.022 0.013];
plot(Time,A) gives me a graph but I need the value of A when Time=0;
I don't have a function or equation, only these values. So when Time=0, what is the value of A?
I'm thinking that some kind of y-intercept thing can be the solution?
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the cyclist
2017-11-27
Strictly speaking, it is not possible to know what the value of A is at Time=0, given only this information. An infinite number of functions could fit these data, and give different values at Time=0. Or maybe Time=0 is an asymptote, and the fit line never crosses it.
Do you have any other relevant info that you have not shared?
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the cyclist
2017-11-27
Fantastic.
If you take the log of each side of that equation, you get
log(A) = log(A0) - k*time
另请参阅
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