please help with the error

I used the code:

a := series(sin(x), x)

and it gave me the error:

Error: "a" was previously used as a variable,
 conflicting with its use here as the name of a function or command.
 See MATLAB Programming, "How MATLAB Recognizes Function Calls That Use Command Syntax" for details.

Can someone please help me with this?

dav

[Jan]

This is not Matlab. Do you mean MuPad?

[dav]

no.. I want to get the taylor series expansion of y=(a+bX^2)^0.5

Can you please help me with it

Answer 1

[Image Analyst]

There is no := operator in MATLAB. Get rid of the colon.

[dav]

still doesnt work!

[Image Analyst]

All right, then how can we help? Have you provided anyone with what might be necessary to help you, like error messages, an m-file, or data file? What toolbox is "series()" in? You didn't list your toolboxes in the Product box either.

Answer 2

[Walter Roberson]

syms x
a = feval(symengine, 'series', sin(x), x);