plotting one variable equation

i want to plot "w" on x- axis and "a" on y- axis. I am not getting the plot. The code used is:

for w = -600:100:-100
a=sqrt(((1200./(w.^2))+10)/((300./(w.^2))+1));
end
plot(w, a)

[priya]

[Sajid Afaque]

probably because you are overwriting a each time.

a stores last iteration value , hence you are plotting only single value of a.

store a as array, it will solve your issue

Answer 1

[Sajid Afaque]

count = 1;
for w = -600:100:-100
a(count) = sqrt((1200/w.^2)+10)/sqrt((300/w.^2)+1);
w_copy(count) = w
count = count+1;
end
figure
plot(w_copy,a)

both w and a are singilar value in your previous attempt, please use the above code it might solve your issue

Answer 2

[Walter Roberson]

wvals = -600:100:-100;
numw = length(wvals);
a = zeros(1,numw);
for widx = 1 : numw
   w = wvals(widx);
   a(widx) = sqrt((1200/w.^2)+10)/sqrt((300/w.^2)+1);
end
plot(wvals, a)

[priya]

thanks a lot.