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CD ROM Paradise Collection 4
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CD ROM Paradise Collection 4 1995 Nov.iso
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sm32a.zip
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LIBRARY
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SECH.LI
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Text File
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1993-10-16
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110b
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5 lines
sech(0) := 1
sech(inf) := 0
sech(-inf) := 0
sech(x_) := if( isnumber(x) and numeric==on, 2/(e^x+e^-x) )