drawing a parabola given distance between vertex and focus, and angle of parabola

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Namrata
Namrata 2011-2-17
how to draw a parabola if distance between its vertex and focus is given and also the angle of parabola is given?

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suresh
suresh 2011-2-17
% y=x^2/4p
% p is focal distance from vertex
%(x,y) is any point on curve
x=linspace(-5,5,100); % 100 point on curve
p=5; %
y=(x.^2)/4*p;
plot(x,y);
hold on;
stem(0,p,'r');
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maram
maram 2011-5-9
hi,
i am beginner in Matlab. i really need to know howa to draw a parabola if distance between its vertex and focus is given and also the angle of parabola is given.
i need a clear code plz
thnaks

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maram
maram 2011-5-9
plz how can i show the results on my image??

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