MATLAB: This happen in using limit, i cant use syms ? someone help me, i need to do the homework, oh god please.

Question

 syms x h
limit(sin(x)/x)
limit((sin(x + h) - sin(x))/h, h, 0)
Undefined function or variable 'syms'.

Answer 1

Please execute the "ver" command. You should have something like

Symbolic Math Toolbox                                 Version 6.1        (R2014b)

as part of the output. If not, that is the answer, you do not have the Symbolic Math Toolbox. If you do have, let's see what

which syms -all

returns