Symbolic entry of rem function

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Nate 2014-9-27

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评论： DmArcher 2017-4-24

When entering the following symbolic code using the remainder (rem) function, Matlab returns x(t,P) = 0, which is clearly wrong.

syms t P

x(t, P) = rem(t,P);

I have tried all combinations of sym, syms, symfun, but the result is the same. I need to enter the symbolic function x = rem(t,P) to perform symbolic integration on it over the period t = [0:P].

Help is appreciated, thanks

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采纳的回答

Star Strider 2014-9-27

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Wrong function. Use mod instead for symbolic operations:

syms t P
x(t, P) = mod(t,P);
x

returns:

x(t, P) =
t*(1 mod P)

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Star Strider 2014-9-28

My pleasure!

It was a fun challenge for me!

DmArcher 2017-4-24

When I type your code I get some errors. Is it possible that you can tell me where I did it wrong? Thx.

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Mathematics and Optimization Symbolic Math Toolbox Symbolic Computations in MATLAB Conversion Between Symbolic and Numeric

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