Error : 'syms' requires Symbolic Math Toolbox.

Hi everyone

when i run the program at version 2021 a, it shows me this message

'syms' requires Symbolic Math Toolbox.

Error in M17_khodir (line 4)

syms x

however it works with my friend version (2018)

any Help

Thanks

[Star Strider]

Your friend obviously has the Symbolic Math Toolbox licensed and installed.

[Mohamed Khodir]

my version is licensed , i didnot get your point , do i need to do something to make it work

[Star Strider]

You need to download and install the Symbolic Math Toolbox.

[Mohamed Khodir]

Okay great i get it thanks

[Star Strider]

My pleasure!

[Annika Stellhorn]

How to download and install the symbolic math toolbox? I have a license for matlab installed, but still getting this error?

Answer 1

[Cris LaPierre]

If they are on your license, you can install additional toolboxes using the Add-Ons Explorer.

[Annika Stellhorn]

thank you!

Answer 2

[kunjbihari kunjbihari]

syms y(t)
cond1 = y(0)==0;
cond2= y(1)==0;
eqn = diff(y,t)==(-y-d^2*y/dx)/2;
dsolve(eqn,cond1,cond2)

[Walter Roberson]

This does not appear to be an answer to the question asked?