help!!!plot problem not a line

clear all

a=400;

b=2;

k=6;

v=200;

e=2;

cp=2;

pr=1;

w=15;

u=0.1:1;

p=(2.*a.*v + 2.*b.*v.*w - 2.*cp.*e.*k.*v - a.*b.*pr.^2*u.^2 + b.*cp.*e.*k.*pr.^2*u.^2)./(b.*(- b.*pr.^2*u.^2 + 4.*v));

plot(p,'rs-','Linewidth',1.5)

grid on;

Why just a point when plot?

Answer 1

[Mohammad Sami]

This is because your code as stated will only output a single value for variable 'p';

This is because of how you initialised the variable 'u'.

u=0.1:1;
u % u is assigned a value of 0.1.

I assume you were trying to initialise u as a vector between 0.1 and 1, with increments of 0.1. You can do it as follows

u = 0.1:0.1:1;
u