MATLAB

What's wrong with the examples you get by typing "help solve"?

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The Symbolic Math package, included in the Student Edition of Matlab, allows us to easily do symbolic manipulations on equations, such as factoring, solving, root finding, integrating, differentiating and solving differential equations. 1. For all variables in the Symbolic Math Package, use single lower case letters (a,b,c,...z) and not upper case letters, numbers or multicharacter strings. The package sometimes has problems parsing strings with more complicated variable names. 2. To define a mathematical function, put quotes around it, such as: 'a*x^2 + b*x + c=0' or 'p*v = n*r*t' 3. You can store a function in a character string, such as QuadEqn = 'a*x^2 + b*x + c=0' 4. The solve command will find the solution (either symbolic or numeric) for a single equation or a system of equations. Try some of the examples below: * solve(QuadEqn,'x') % This will solve symbolically for the variable x * solve(QuadEqn,'a=3','c=-1','x=-1') % will find the value of b which makes this true * solve(QuadEqn,'a=sqrt(c)','b=2','x=-1') % A more complicated example * solve('y=m*x+b','y=n*x+c','m=1','b=2','n=3','c=4') % Will find intersection of two lines * solve('y=sin(log(x+y))','y=cos(exp(x^y))') % Try this one on your calculator! 5. To quickly plot some equation with a single variable over some range, use ezplot * ezplot('sin(x)/x',[-10 9.9]) % (I used 9.9 so it wouldn't evaluate it at zero, which gives a divide by zero error) * ezplot('sin(x)^3+x+sin(x)', [-20 20]) 6. For a complete discussion, see the "Symbolic Math Toolbox Tutorial" in the Student Edition of Matlab manual.

From here.

I thought homework help was verboten.

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Original post by Ravuya I thought homework help was verboten.

Is showing how to use a program helping that person with their homework, though?

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Original post by Chokki Quote: Original post by Ravuya I thought homework help was verboten. Is showing how to use a program helping that person with their homework, though?

I wouldn't think so.

It's kinda funny, their first post is about MATLAB in the OT Lounge :P

Thanks a lot, _Sigma for your help. I'm just a starter at MATLAB and you really helped me understand many things. Thanks one more time.

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Original post by deshapoui Thanks a lot, _Sigma for your help. I'm just a starter at MATLAB and you really helped me understand many things. Thanks one more time.

NO worries. Perhaps check google next time, as that is where I obtained said information. Glad I could help though.