My problem is, the display of my plot were dots. how will i able to display it with a curve line. the main code shoud be inside of the for loop.

for x=0.3:0.01:0.5

     y=15e-9*exp(x/25e-3)-1;
     plot(x,y) 
     hold on

end

Answer 1

[Matt Fig]

If I were making this plot, I would do as Jose has indicated. However, I want to show you a more proper way to get it done with a FOR loop because some things are not so easily vectorized as this.

x = 0.3:0.01:0.5;  % Define this first.
y = zeros(size(x));  % reserve memory for y.

for ii = 1:length(x)
     y(ii)=15e-9*exp(x(ii)/25e-3)-1;  % Fill y, one at a time.
end

plot(x,y)

[Mike]

oh i see..

well done bro... thanks for that..

Answer 2

[José-Luis]

You are plotting point by point. You might want to try:

x=0.3:0.01:0.5;
y=15e-9*exp(x/25e-3)-1;
plot(x,y,'k-'); %black line

For more help:

help plot

[Mike]

thanks jose.. that gives me idea