Derivatives Of Log. Functions... HELP!!! Calculus II is a Bitch! - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 11-03-2007, 03:32 AM   #21
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Isn't this what software is for?!?
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Old 11-03-2007, 05:51 AM   #22
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forty two.
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Old 11-03-2007, 10:59 AM   #23
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Think Calc is hard...just wait for thermo. Nothing better than a take home test with one problem that takes 40hrs to complete.

It's even better when your professor's English is about as clear as mud.

I will say it is all worth it in the end. A professional salaried job makes playing with cars and racing a little easier. Stick with it!
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Old 11-03-2007, 12:01 PM   #24
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Old 11-03-2007, 12:45 PM   #25
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That just leaves me with mental images of good will hunting.

Mark
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Old 11-03-2007, 12:46 PM   #26
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Loki, how do you remember how to do that?
I grdauated in May, my last math course was calc three sophomore year to be honest I have no idea. Calc was never that hard for me, the problem is you have teachers instead of teaching you the overall concept and then walking you through derivations for each case, they try to teach you "rules" for each type, ie chain rule or whatever. It really didn't click until i took a class after differential equations that I cant remember the name of.

But pat, get one of those calculators that does everything. I had a voyage 200, but while they wouldn't let me use it in test it allowed me to double check all my answers for hw
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Old 11-03-2007, 12:50 PM   #27
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Think Calc is hard...just wait for thermo. Nothing better than a take home test with one problem that takes 40hrs to complete.
Dude thermo is easy, just remember to assume everything doesnt exist, wait for heat trasnfer then you cant its all taken into account. If i ever have to nondimensionalize a problem again ill shoot myself in the face.
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Old 11-03-2007, 02:15 PM   #28
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Hey Ben- When you used the product rule in step 3, Isn't the derivative of a constant Zero?
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Old 11-03-2007, 02:18 PM   #29
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loki you my math hero
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Old 11-03-2007, 02:19 PM   #30
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But pat, get one of those calculators that does everything. I had a voyage 200, but while they wouldn't let me use it in test it allowed me to double check all my answers for hw
I've been thinking about doing that. I've always used my TI-83 that was given to me used 8 years ago Perhaps a higher level Texas Instruments? I've never heard of a Voyage before.
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Old 11-03-2007, 02:33 PM   #31
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Hey Ben- When you used the product rule in step 3, Isn't the derivative of a constant Zero?
Indeed
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Old 11-03-2007, 03:18 PM   #32
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Thanks Ben, that helps. Then you can simplify 2(cos/sin)x to 2cotx. That's the final answer in my notes, so that must be how to get to it.

Thanks everybody for all the help. This is the best turbochaged miata/Calculus help Forum in the world!!!
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Old 11-03-2007, 03:45 PM   #33
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Right.
FWIW, I got help w/ that. There's a math major (grad w/ honors) in the kitchen. :gay:
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Old 11-03-2007, 05:01 PM   #34
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I've been thinking about doing that. I've always used my TI-83 that was given to me used 8 years ago Perhaps a higher level Texas Instruments? I've never heard of a Voyage before.
2 things about the voyage, full keyboard, and usb port to plug into a computer. TO download notes to it
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Old 11-03-2007, 05:08 PM   #35
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2 things about the voyage, full keyboard, and usb port to plug into a computer. TO download notes to it
Well, that's two good reasons right there Do any higer level calculators actually show the steps involved to solving the problem? Perhaps that's asking too much, but if I'm buying it to help me learn, that would be the deciding factor come time to buy one.
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Old 11-03-2007, 07:42 PM   #36
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well i used to do the steps for each problem and then check it with the calc. I couldnt recommend it enough
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Old 11-03-2007, 07:46 PM   #37
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Well, that's two good reasons right there Do any higer level calculators actually show the steps involved to solving the problem?
That's what solutions manuals are for. If you google questions from the book alot of times you can find an uploaded solutions manual. Even bittorrent might have it.
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Old 11-03-2007, 08:07 PM   #38
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Problem: Y=ln(x^4(sin^2(x))) Find first derivative.

=(d/dx) ln(x^4(sin^2(x)))
=4lnx+ 2lnsin^2x
=(4/x)+2(1/sinx)cosx
=(4/x)+2cotx

^^that is your answer
I have the same book but I am in calc one, i hate differentiations

*EDIT* sorry i didnt realize you already had the answer
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Old 11-03-2007, 08:11 PM   #39
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btw, ticalc.org

you can download programs that help find the answer... its a good reference, but we arent allowed calculators
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Old 11-04-2007, 12:22 AM   #40
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btw, ticalc.org

you can download programs that help find the answer... its a good reference, but we arent allowed calculators
I dont think anyone is, cept for calc three cause those we impossible by hand (time wise)
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