How to plot $40b^2x-9b^2-60bx+72b-144=0$
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How to get a (b,x)-plot of the curve
where b varies from 0 to 10 and x varies from 0 to 1
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/229713/image.png)
I have tried the following
ezplot('40*b^2*x-9*b^2-60*b*x+72*b-144')
axis([0 10 0 1])
But not getting the curve after b=6.2. Is there any better way to plot it.
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Rik
2019년 7월 14일
It shouldn't be too hard to pry out x from this equation. Getting out b is a bit more tricky.
40b^2x-9b^2-60bx+72b-144=0
-9b^2+72b-144=-40b^2x+60bx
x=(-9b^2+72b-144)/(-40b^2+60b)
%in Matlab syntax:
Fun=@(b) (-9*b.^2+72*b-144)./(-40*b.^2+60*b);
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