I am learning Matlab and i am always getting the error "Undefined function 'solve' for input arguments of type 'char'." when i try to solve an equation. How do i solve it?

solve('v-u-3*t^2=0', 'v'); Undefined function 'solve' for input arguments of type 'char'.

Answer 1

[Brendan Hamm]

It looks like you are trying to use the symbolic math toolbox, in which case you need to make these variables symbolic:

syms v u t
>> solve(v-u-3*t^2 == 0,v)
ans =
3*t^2 + u

[SUMAN ADHIKARI]

Thank you but when I try to create symbolic variable using syms i get the error. syms v Undefined function 'syms' for input arguments of type 'char'. How can i know that I am using symbolic tool box?

[Brendan Hamm]

This likely means you do not have the symbolic toolbox. You can check by typing:

ver

This will display a list of all of the toolboxes and versions of MathWorks Products.

[SUMAN ADHIKARI]

I checked it and i dont have symbolic tool box.Thank you for your help