Help Print Command Error

function [dy] = y(n,to,t,y0)

t=[0:0.01:5] h=[0.1 0.001] t0=0 y0=1 n=50 h=0.1 t=t0 y=y0

Hello, i'm new to matlab and have developed the following code for a euler solver. for i=1:n k=2-exp(-4*t)-2*y y=y+h*k t=t+h

    print('t','y')

end

I'm trying to use the print command but am getting the following error.

Error using inputcheck (line 40) Multiple inputs that look like filenames: 't' and 'y'

Error in print (line 163) [pj, devices, options ] = inputcheck( pj, inputargs{:} );

Error in bmes511_hw3 (line 18) print('t','y')

Any ideas why?

[Kyle]

oops. here's what the function should look like

function [dy] = y(n,to,t,y0)

t=[0:0.01:5] h=[0.1 0.001] t0=0 y0=1 n=50 h=0.1 t=t0 y=y0 for i=1:n k=2-exp(-4*t)-2*y y=y+h*k t=t+h

    print('t','y')
end

[Mischa Kim]

Do you simply want to display the variables in the command window? The print command is used to print a figure.

[Kyle]

oh... yeah. thats what i'm trying to do.

Answer 1

[Mischa Kim]

OK. Use

sprintf('%5.2f: %5.2f', t, y)

or something like that. With the %5.2f you can specify the number format: total of five digits, two after the decimal point, fixed-point. Check out the documentation for a full description of the formatting syntax.

[Mischa Kim]

Careful, I just looked at your code. You first define t as a vector, then you re-assign it into a scalar by t = t0.