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Registered Member #242
Joined: Thu Feb 23 2006, 11:37PM
Location: Erie PA
Posts: 210
Andrew wrote ...
you could save even MORE time doing it on an integrating calculator like a TI-89. no well adjusted student will purposely make his or her homework take longer than it has to.
Not to mention for the tests. This one professor would make the tests hard as balls on purpose and then curve them at the end (and you always have that really smart kid that gets like a 98% on it, setting the curve). It was hard enough trying to finish the test alone, let alone making sure I did my integration and whatnot correctly.
Registered Member #65
Joined: Thu Feb 09 2006, 06:43AM
Location:
Posts: 1155
The TI's Row Reduce Echelon Form (rref) function can save time (notably true for larger matrices and chemistry problems). The probability functions are handy too. The HP seems more useful sometimes – But some Profs will not let you use either of them on the exams. In general it’s not allowed if it graphs or is programmable. However, non-math courses you can use just about anything you want most of the time.
Yeah, calculus is pretty easy. The numerical analysis courses were the ones with all the proofs and are much more fun in terms of time constraints. Undergraduates tend to find first and third year the most difficult for various reasons.
Registered Member #49
Joined: Thu Feb 09 2006, 04:05AM
Location: Bigass Pile of Penguins
Posts: 362
The TI's Row Reduce Echelon Form (rref) function can save time (notably true for larger matrices and chemistry problems)
Amen! I don't know why, because I realize its not too tough, but I HATE reducing matrices. HATE IT!!!!!!
Funny story about the rref() button though. When I was a sophomore in an E&M class, we were given a question on a test that was meant to be too difficult to solve by hand, and it was supposed to 'force' you to solve the problem by inspect alone (it was basically two identical current loops, with a connection between the two. it was supposed to be intuitive that no current flowed through this junction, as the circuits on each side were identical)
so I didn't "get" the problem and I solved it with loop-node rules, 12 of em, solved simultaneously in a 12x13 matrix. the TA didn't know about the magic of rref() and was thusly so struck by the fact that i (apparently) successfully recuded a 12 equation system in the exam period that he held up my exam in front of the class afterwards and babbled at length about it. I never told him.
Registered Member #15
Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
Fooey. You don't need no stinkin' fancy calculator. One with addition, multiplication, subtraction, and division is all you need.
When I went to school, I had a simple Radio Shack scientific calculator, there was no world wide web, email was on Unix based systems only, and the fastest PC in my dorm was a 286 with a processor speed of 5MHz complete with a 10GB harddrive that contained about 10 large disks and weighed about 20 lbs.
Also, note that when I was a freshmen in school, 1MB of RAM cost more than $100.00 and a 1GB Harddrive was upwards of $10,000 bucks.
Registered Member #99
Joined: Thu Feb 09 2006, 06:10PM
Location: florida, usa
Posts: 637
EastVoltResearc wrote ...
Fooey. You don't need no stinkin' fancy calculator. One with addition, multiplication, subtraction, and division is all you need.
When I went to school, I had a simple Radio Shack scientific calculator, there was no world wide web, email was on Unix based systems only, and the fastest PC in my dorm was a 286 with a processor speed of 5MHz complete with a 10GB harddrive that contained about 10 large disks and weighed about 20 lbs.
Also, note that when I was a freshmen in school, 1MB of RAM cost more than $100.00 and a 1GB Harddrive was upwards of $10,000 bucks.
Calculators just confuse me...I do things by hand. Trig got me good at doing things in my head, and its just stuck. 10k$ for 1GB?Whoaaaa!That must have been WaAaAaAayyyyy long ago Matt
Registered Member #32
Joined: Sat Feb 04 2006, 08:58AM
Location: Australia
Posts: 549
EastVoltResearc wrote ...
Fooey. You don't need no stinkin' fancy calculator. One with addition, multiplication, subtraction, and division is all you need.
No, just addition and multiplication, then you can calculate logs and sines with Taylor expansions...
Physics courses are all different and Engi is different from Physics. I can say that in my courses, though, I never need more than standard scientific functions.
(On another note, sometimes I marvel at the people who did celestial mechanics in the middle of the last century without modern computer systems on every desk. Solving Kepler's equation without a computer, ouch.)
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Break from Projects for a While :-(
Have fun at college edy19!
