"simplify" doesn't work properly

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ercan duzgun
ercan duzgun 2018-8-15
评论： Christopher Creutzig 2018-12-3
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.
  1 个评论
Christopher Creutzig
Christopher Creutzig 2018-12-3
It would probably help to give an actual working example of your problem.

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采纳的回答

Star Strider
Star Strider 2018-8-15
编辑：Star Strider 2018-8-15
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)

更多回答（1 个）

ercan duzgun
ercan duzgun 2018-8-15
Well, as I find out: the vpa comment fix this problem better.

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