absolute value of negative real numbers

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why negative real numbers are not allowed for "abs"? for example abs(-1) gives me 'Subscript indices must either be real positive integers or logicals' error

采纳的回答

KL
KL 2017-10-17
Probably you've created a variable called abs in the workspace. Try
clear abs
abs(-1)

更多回答(1 个)

Mos_bad
Mos_bad 2017-10-17
it worked. thanks.

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