MATLAB: How to declare function

function

I'm trying to understand declaration of functions in Matlab. I want to compute

y(x)=x(sqrt(x)-sqrt(x-1)) for x= 10; 100; 1000;

And after declaring it as a function(.m) how can I call this function?

Thanks in advance

Best Answer

Dear Mustafa,

function y = calculate_sqrt(x)
y = x .* (sqrt(x) - sqrt(x - 1));
end

you can save it with the name "calculate_sqrt.m"

and then later you call it as

x = [10 100 1000];
y = calculate_sqrt(x);

I hope it helps. Good luck!

Related Solutions

MATLAB: How to declare

Do you have the symbolic toolbox? If yes than

syms R G
r = 4/pi * atan((R-G)/(R+G));

else you're more than likely going to hve to define R and G in terms of domains. For example

R = 0:0.01:1;
G = 0:0.1:10; %Make sure the matrix dimensions agree. 
r = 4/pi * atan((R-G)/(R+G));

Matrix manipulation is what matlab was designed to do at its basic level. the symbolic stuff is an add on that works pretty well.

MATLAB: Doubt in declaring a function

No, there is not. You cannot name an element of a matrix in a function header. You can use two different variables though.

function err = ODE_fit(fun, exp_t, exp_y, Q, theta1, theta2, iniVal)
% exp_y = Experimental observation at time exp_t
[t,y] = ode45(@(t,X)fun(t,X,n, S0, Q, theta1,theta2),exp_t,iniVal); 
err = sum(sum((y-exp_y).^2)); % compute error between experimental y and fitted y
end

Best Answer

Related Solutions

MATLAB: How to declare

MATLAB: Doubt in declaring a function

Related Question