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How can i define piecewise function ?

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Fatih
Fatih 2014-2-22
回答： Andreas Sorgatz 2017-8-25
I want to define a piecewise function
syms x y piecewise([x<=y,1+y],[x>y,1+x])
but i get error message
Undefined function 'piecewise' for input arguments of type 'sym'.
How can i define this function ?

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回答（1 个）

Andreas Sorgatz
Andreas Sorgatz 2017-8-25
You are mixing MATLAB and MuPAD syntax. Also ';' or a linefeed is missing. Try
>> syms x y
>> piecewise(x<=y,1+y, x>y,1+x)
ans =
piecewise(x <= y, y + 1, y < x, x + 1)

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