problem regarding plotting cuvres

I am supposed to plot 3 curves on the same figure, The first plot is ok( the red one ), but the other 2 I am getting 2 separated curves for each plot..is there any idea to help me solve this problem?

Thanks in advance.

[Torsten]

It seems the x-coordinates are not arranged in an increasing order.

[SSBGH]

how can i arrange them in an increasing order?

[Walter Roberson]

How are you calculating the positions? Are you possibly using roots() or solve() or vpasolve() ?

[SSBGH]

im just plotting 3 curves of a differential equation using 2 different approximation methods

Answer 1

[Torsten]

Insead of using

plot(x,y) 

try

[sorted_x,I] = sort(x);
sorted_y = y(I);
plot(sorted_x,sorted_y)

for the green and blue curves.

[SSBGH]

thanks alot it worked