| Symbolic Math Toolbox | Search Help Desk | |
| findsym | Examples | See Also |
Finds the variables in a symbolic expression or matrix.
r = findsym(S) r = findsym(S,n)
findsym(S) returns all symbolic variables in S in alphabetical order, separated by commas. If S does not contain any variables, findsym returns an empty string.
findsym(S,n) returns the n variables alphabetically closest to x.
Note
i or j, that begins with an alphabetic character.
syms a x y z t
findsym(sin(pi*t)) returns pi, t.
findsym(x+i*y-j*z) returns x, y, z.
findsym(a+y,1) returns y.
compose, diff, int, limit, taylor