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CD ROM Paradise Collection 4 1995 Nov.iso
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KEYWORD
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ISFREE.KEY
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1993-11-07
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342b
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7 lines
* isfree internal
isfree(y,x) gives 1 if y is free of x, or 0 otherwise.
You can assume y is free of x by iseven(y,x) := 1.
See also: iscomplex, iseven, isfree, isinteger, islarger, isless, islist,
isodd, isreal, isratio, issame, isnumber.
e.g. isfree(a*b,x) gives 1, isfree(x*y,x) gives 0.