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

Question

Namrata 2011-2-17

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https://ww2.mathworks.cn/matlabcentral/answers/1479-drawing-a-parabola-given-distance-between-vertex-and-focus-and-angle-of-parabola

采纳的回答： suresh

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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Answer 1

suresh 2011-2-17

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https://ww2.mathworks.cn/matlabcentral/answers/1479-drawing-a-parabola-given-distance-between-vertex-and-focus-and-angle-of-parabola#answer_2221

在 MATLAB Online 中打开

% 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 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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