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plotting a 2nd order matlab

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Joaquim on 3 May 2017
Commented: Wine on 3 May 2017
Hello everybody,
I'm trying to plot a 2nd order polynomial. I have a vector X and the y values are determined by the equation
Y= -0.01291*X.^2-0.1971*X+47.39;
When I try to plot using
I get this plot
However I want a single line and not a filled form. Anyone know how to this?

  1 Comment

Wine on 3 May 2017
how have you defined your X-vector? Because the look of your plot depends on this X-vector. If you use for example
X = 0:1:100;
as vector definition, the plot will be a line.
Cheers Wine

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