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

how to draw a parabola if distance between its vertex and focus is given and also the angle of parabola is given?

Answer 1

[suresh]

% 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');

[maram]

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

Answer 2

[maram]

plz how can i show the results on my image??