Why gives Plot[GTK,{q,o,30}] negat. min. at q=15 ? (GTK:=1/3 q^2 - 10 q + 100)
- Subject: [mg2170] 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, 11 Oct 1995 05:59:34 GMT
- Approved: usenet@wri.com
- Distribution: local
- Newsgroups: wri.mathgroup
- Organization: Wolfram Research, Inc.
- Sender: daemon at wri.com ( )
Say GTK = ATC = Average Total Cost := 1/3 q^2 - 10 q + 100
When I give Plot[GTK,{q,0,30}] the resulting graph gives a minimum
below to X-axis at aboutq=15
When I give q=15 and N[GTK] it evaluates correctly to GTK=25.
What am I doing wrong ? Thanks for any effort you take !
------------- GMT 16.15
Jan Holland
txp at pi.net
"A fact is a broken dream"