# I am trying to plot the value of the function P(x,y) along the line segment that connects (0,0) and (6,4)

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Kevin Junior on 8 Oct 2013
Commented: Roger Stafford on 9 Oct 2013
P(x,y) = 100*exp(-.4*( (x-1)^2 + 0.7*(y-3)^2))+ 80*exp(-.2*(2*(x-5)^5+1.5*(y-1)^2)); so I am going to use the plot(x.y) function. how do I plot a function along a segment that goes from (0,0) to (6,4) ? I am kind of lost.
Roger Stafford on 9 Oct 2013
You had better pay attention to what Matt has told you. In the second term you will get exp(1251.5) at (0,0) which is an enormous number well above matlab's double precision floating point maximum value. Someone is pulling your leg or you have copied the problem incorrectly.

Honglei Chen on 8 Oct 2013
Edited: Honglei Chen on 8 Oct 2013
I think you need to use plot3 for this. You need to first find x and y points you want. For example
x = 0:0.01:6;
y = 4/6*x;
z = x+y;
plot3(x,y,z);

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