Question on the format of 2D curve fit equations in plot

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Peter Cheimets 2025-9-30，21:02

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评论： Peter Cheimets 2025-10-1，13:51

采纳的回答： John D'Errico

I am using basic curve fitting for the first time in a while and I get a bunch of equations of the form:

y = 6.588e + 06x^2 +4028x - 1.066. Can someone tell me what the "e" is in the first term?

Thanks

Peter

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John D'Errico 2025-9-30，21:21

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编辑：John D'Errico 2025-9-30，21:24

在 MATLAB Online 中打开

Scientific notation.

6.588e + 06x^2 == 6.588*10^6 * x^2

Note that it is easier and faster to write, and even a bit easier to read once you learn it. This is commonly used all over MATLAB. For example:

x = 2.3*10^12
x = 2.3000e+12

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Peter Cheimets 2025-10-1，13:49

That was a snip of the output from the Basic Fitting tool that I got to from the tool menu in Plot in version R2024b on a Mac (maybe I need update). Here is the plot and the output together:

Peter Cheimets 2025-10-1，13:51

Also, now that I look at the image here, I see the version of the equation on the plot itself, and that is certainly clear.

Thanks everyone.

Peter

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