Mistake in Manual or Im too stupid??

Author	Topic: Mistake in Manual or Im too stupid??
Tavadi Apprentice Member # 4754	written Thursday, July 22 2004 09:59 Profile #0 So I was reading editors manual and Im pretty confused about following sentence: 'However, operations are done from right to left, instead of the usual left to right (so 9 – 3 – 3 is 0, not 3, because the subtraction on the right is done first).' Ok dont tell me why its right to left, lets leave it, but HOW is '9 – 3 – 3 = 0'?? Please someone explain to me. [ Thursday, July 22, 2004 10:00: Message edited by: Tavadi ] Posts: 12 | Registered: Wednesday, July 21 2004 07:00
Kelandon Off With Their Heads Member # 4045	written Thursday, July 22 2004 10:06 Profile Homepage #1 It's not. This is an error in the docs. The point is to put parentheses around EVERYTHING, rather than relying on normal Order of Ops to save you. 9 - (3 - 3) = 9 (9 - 3) - 3 = 3 9 - 3 - 3 = ???? I haven't tried the last one, but it really doesn't matter. Don't leave numbers naked. Use parentheses. That's all it's trying to say. -------------------- Arancaytar: Every time you ask people to compare TM and Kel, you endanger the poor, fluffy kittens. Smoo: Get ready to face the walls! Ephesos: In conclusion, yarr. Kelandon's Pink and Pretty Page!!: the authorized location for all things by me The Archive of all released BoE scenarios ever Posts: 7968 | Registered: Saturday, February 28 2004 08:00
Groovejet Warrior Member # 2838	written Thursday, July 22 2004 10:28 Profile #2 I think that what he meant was this: 9 - (3 + 3) = 9 - 6 = 3 Negative three minus negative three is negative 6. [ Thursday, July 22, 2004 11:18: Message edited by: magoicochea ] -------------------- …../|,-‘`¯¯`\(o)_\,----,,,_……… …( `\(o),,_/` ¯ : o : :: o`-, … I'm under your bed. Posts: 118 | Registered: Wednesday, April 2 2003 08:00
Overwhelming Infiltrator Member # 4637	written Thursday, July 22 2004 10:37 Profile Homepage #3 This mistake was already pointed out in another thread. :) And you'll find more mistakes. ;) -------------------- Visit the Blades of Avernum Center and the Beta Testing Center -------------- "Beware lest anyone cheat you through philosophy and empty deceit, according to the tradition of men, according to the basic principles of the world, and not according to Christ." Colossians 2:6-9 Posts: 483 | Registered: Tuesday, June 29 2004 07:00
Garrison Agent Member # 2820	written Thursday, July 22 2004 10:42 Profile #4 The terms are just being evaluated from right to left. Usually, 1+2+3 means (1+2)+3 because it is done left to right But with Jeff's system it is 1+(2+3) 2+3*6 usually means 2+(3*6) because of order of operations, and it should still apply in Jeff's system But that is an error in the docs because 9-3-3 should be 9+(-3-3) which is 3. -------------------- Thuryl: I mean, most of us don't go around consuming our own bodily fluids, no matter how delicious they are. ==== Alorael: War and violence would end if we all had each other's babies! ==== Drakefyre: Those are hideous mangos. Posts: 1415 | Registered: Thursday, March 27 2003 08:00
Groovejet Warrior Member # 2838	written Thursday, July 22 2004 11:17 Profile #5 Yes, the mistake is that he may have thought that it was 3*3 -------------------- …../|,-‘`¯¯`\(o)_\,----,,,_……… …( `\(o),,_/` ¯ : o : :: o`-, … I'm under your bed. Posts: 118 | Registered: Wednesday, April 2 2003 08:00
Garrison Agent Member # 2820	written Thursday, July 22 2004 17:14 Profile #6 But then you have to consider that the statement also said 9-3-3=3! (9-3)-3 is so very different from 9-(3*3). In reality, the direction of interpretation shouldn't matter as long as the order of operations apply, (Addition, Subtraction, Multiplication, Division; the positive operator must always have precedence) -------------------- Thuryl: I mean, most of us don't go around consuming our own bodily fluids, no matter how delicious they are. ==== Alorael: War and violence would end if we all had each other's babies! ==== Drakefyre: Those are hideous mangos. Posts: 1415 | Registered: Thursday, March 27 2003 08:00
Tavadi Apprentice Member # 4754	written Friday, July 23 2004 09:10 Profile #7 Damn! I just graduated from Physics and Mathematics School and Im still confused! :confused: Posts: 12 | Registered: Wednesday, July 21 2004 07:00
Kelandon Off With Their Heads Member # 4045	written Friday, July 23 2004 10:40 Profile Homepage #8 Just use parentheses everywhere to tell BoA what order you want things to be evaluated, and you'll be fine. Both in regular math and in BoA, 9 - (3 - 3) = 9 and (9 - 3) - 3 = 3. Everything else is superfluous if you just use a lot of parentheses. -------------------- Arancaytar: Every time you ask people to compare TM and Kel, you endanger the poor, fluffy kittens. Smoo: Get ready to face the walls! Ephesos: In conclusion, yarr. Kelandon's Pink and Pretty Page!!: the authorized location for all things by me The Archive of all released BoE scenarios ever Posts: 7968 | Registered: Saturday, February 28 2004 08:00