Why gives Plot[GTK,{q,o,30}] negat. min. at q=15 ? (GTK:=1/3 q^2 - 10 q + 100)
- To: mathgroup at smc.vnet.net
- Subject: [mg2244] Why gives Plot[GTK,{q,o,30}] negat. min. at q=15 ? (GTK:=1/3 q^2 - 10 q + 100)
- From: txp at pi.net (JanHolland)
- Date: Wed, 18 Oct 1995 01:54:59 -0400
- Organization: txp
Hello,
Say ATC = Average Total Cost := 1/3 q^2 - 10 q + 100
When I give Plot[ATC,{q,0,30}] the resulting graph gives a minimum
below the X-axis at about q=15
When I give q=15 and N[ATC] it evaluates correctly to GTK=25.
Does anyone know what am I doing wrong ? Thanks for any effort you
take !
------------- GMT 16.15
Jan Holland
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Jan Holland
txp at pi.net
"A fact is a broken dream"