Make matlab differentiate until the conditions are met?

I'm making an application for l'hopital's rule. As anyone with knowledge of calculus, you would differentiate the two functions until one of the functions gives a nonzero limit. My question is how can I do that.

This is the code I have so far:

function y=mylhopital(f,g)

syms x

while(limit(f,x,0)==0 & limit(g,x,0)==0)

f=diff(f(x));

g=diff(g(x));

end

y=limit(f,x,0)/limit(g,x,0);

Answer 1

[Matt Fig]

If you want to keep differentiating until only one of the functions has a nonzero limit, simply use:

(limit(f,x,0)==0 || limit(g,x,0)==0)

instead of:

(limit(f,x,0)==0 & limit(g,x,0)==0)

By the way, when somebody resolves one of your questions, please select their answer as accepted. You have now asked 4 questions and left them all unresolved even though people took the time to answer for you...