From toida@cs.odu.edu Fri Sep 17 17:15:57 1999 Date: Fri, 17 Sep 1999 17:09:36 -0400 (EDT) From: S. ToidaTo: cboyd001@odu.edu, grbvelarde@earthlink.net, gvelarde@emh.qedsysinc.com, halford@cs.odu.edu, hillsbells@hotmail.com, jhard001@odu.edu, johnsonb@tez.net, lan_j@cs.odu.edu, mcghee@cs.odu.edu, nathan@netscope.net, nkeen001@odu.edu, Oly1@worldnet.att.net, shaunc@rica.net, tallison@hrnc.com,craig.todd@bankofamerica.com Subject: Re: hws > Dr. Toida, > > I have reviewed your comments on the homeworks for cs395. I have a couple of > questions, though. > > Your message indicated that the point distribution question 2 is 18 points; I > assume (perhaps incorrectly) that each of the 6 parts to the question are 3 > points each. However, you marked my 8f incorrect (presumably 3 points off), > but I only got 12 points for the question. Is each part of question 8 weighted > differently? Yes. See my e-mail "hw1&2" > > My other question may (hopefully) make the above question moot. For 8f, x + y > = y + z if x = z, my answer was that this is a true proposition. In marking > this wrong you stated that we don't know the values of x,y,z. However if x = > z, then the equation could also be written z + y = y + z. In this case, > regardless of the values of y and z (and x), the statement is always true. As > question 8e indicates a value for x to make the statement a false proposition, > I would think 8f would be treated similarly. Furthermore, in question 7 (I > think, I don't have my book with me), there is an almost identical statement (y > + z = z + y, I believe). The answer book treats this as a true proposition as > it is always a true statement regardless of the value. > I said "what x,y,z represent". They may not represent a number. For example they may represent books or cars. If that is the case, then "x+1", "x+y" etc. would not make any sense. > Please let me know if my thinking is correct and my answer can be considered > correct. Thank you! > These are tricky questions. So don't feel too bad for missing them. Toida