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?

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

Answers (1)

Brendan Hamm
Brendan Hamm on 12 Aug 2015
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
  3 Comments
Brendan Hamm
Brendan Hamm on 12 Aug 2015
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.

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