"simplify" doesn't work properly

Dear Matlab users;

I have a problem when I use symbolic toolbox. When it gives the result in symbolic, even though I use simplify comment, it doesn't work properly as I want it to be.

I will give a similar example here, since the actual one is a bit long:

2*(sin(x)*1/2+cos(x)*1/2)

When I calculate the result myself by hand, I get;

sin(x)+cos(x) .

But MATLAB gives the result as I written above.

How can I fix this?

Thanks in advance.

[Christopher Creutzig]

It would probably help to give an actual working example of your problem.

Answer 1

[Star Strider]

Choosing the correct function is important. Without knowing your actual expression (so I do not know if this is appropriate for it), expand or isolate rather than simplify may be most appropriate:

syms x 
Eq = 2*(sin(x)*1/2+cos(x)*1/2);
R = expand(Eq)

R =
cos(x) + sin(x)

[Christopher Creutzig]

For this input, Eq is already in the expected form.

Answer 2

[ercan duzgun]

Well, as I find out: the vpa comment fix this problem better.

[Star Strider]

The vpa function is certainly another option.