how to plot three variables in a line graph with values ?

ax[1] = 0.98 ax[2] = 1.2 ax[3] = 0.23

bx[1] = 2.1 bx[2] = 0.236 bx[3] = 1.25

cx[1] = 0.01 cx[2] = 0.025 cx[3] = 0.52

plot(ax,bx,cx); is possible ?

Answer 1

[Jan]

ax = [0.98, 1.2, 0.23];
bx = [2.1, 0.236, 1.25];
cx = [0.01, 0.025, 0.52];

What do you expect now? Is ax the x-component of the line? Or should it be 1:3 implicitly?

x = 1:3;
plot(x, ax, x, bx, x, cx);  % EDITED, Typo ay->ax

Or:

plot(x, [ax; bx; cx])

Answer 2

[Azzi Abdelmalek]

ax(1) = 0.98
ax(2) = 1.2
ax(3) = 0.23
bx(1) = 2.1
bx(2) = 0.236
bx(3) = 1.25
cx(1) = 0.01
cx(2) = 0.025
cx(3) = 0.52
plot(ax,bx,cx)

Use () instead of [ ]

[Jan]

What do you expect as output, when you call plot() with three vectors?

I get this for your code:

 ??? Error using ==> plot
 Data must be a single matrix Y or a list of pairs X,Y

[Waleed Eid]

you have incorrect code.

Error using plot
Data must be a single input of y --values or 
one or more pairs of x -- and y--values.