How can I use a for loop to get the function to run at multiple values?

I am trying to use a for loop to get values for this equation: @(n,x) sqrt(2/4.0).*sin(((n.*pi).*(x-0.6))./4.0) for n = 1, 2, 3, 4

I also want to plot all four equations at n=1,2,3,4. I tried constructing a for loop, but get the error that the vectors are not the same length. I tried using linspace instead to remedy that but get the same error message. Please provide help.

n = linspace(1,1,4)

s = zeros(length (n),0)

for i = 1:length(n)

fxn = @(n,x) sqrt(2/4.0).*sin(((n.*pi).*(x-0.6))./4.0)

end

plot(n,s)

Answer 1

[David Hill]

n = 1:4;
x=0:.01:2*pi;
fxn = @(n) sqrt(.5)*sin(((n*pi)*(x-0.6))/4);
figure;
hold on;
for i = 1:length(n)
    f(i,:) = fxn(n(i));
    plot(x,f(i,:))
end

Answer 2

[Star Strider]

I am not certain what result you want.

Try this:

fxn = @(n,x) sqrt(2/4.0).*sin(((n.*pi).*(x-0.6))./4.0);

n = (1:4).';
x = linspace(0, 2*pi, 100);

s = fxn(n,x);

figure
plot(n,s)
grid
xlabel('n')
ylabel('s')

Note that no loops are necessary, since the vectorised code creates the rows automatically.