how to plot these functions?
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how to plot these functions in matlab 2013b?
- 49y^2-56x+16=0
- X^2+Y^2-(32/49)=0
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Answers (2)
Roger Stafford
on 12 Mar 2014
Successfully plotting such relationships often involves selecting the appropriate parameter. In the case of the first equation, that would be one of the variables, namely, y. If a range of y values is generated using 'linspace', then x is easily expressed as a function of y:
y = linspace(-5,5,1000);
x = (49*y.^2+16)/56;
This can then be plotted:
plot(x,y)
For the second equation, which is that of a circle, a good parameter to use is the angle of a vector from the origin to a point (X,Y) on the circle, which can be generated to vary between 0 and 2*pi. Then X and Y can be expressed in terms of that angle and the circle plotted.
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