/sci/ - Science & Math » Thread #13817979

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Anonymous Thu 04 Nov 10:43:18 2021 No.13817979 View Reply Original Report

Quoted By: >>13817991 >>13818081

Hello anons of /sci/

I never browse this board, Im usually on /biz/ but I need your help. I failed my exam 3 times now and I dont know what Im doing wrong. Can you anons teach me how to differentiate (math)? I would appreciate that a lot.

Anonymous

Anonymous Thu 04 Nov 2021 10:47:12 No.13817990 Report

Quoted By:

Bump

Anonymous

Anonymous Thu 04 Nov 2021 10:48:18 No.13817991 Report

Quoted By: >>13817999

>>13817979
have you tried watching lecture videos or something?

Anonymous

Anonymous Thu 04 Nov 2021 10:53:53 No.13817999 Report

Quoted By: >>13818012

>>13817991
I watched lecture videos, went to the lecture itself, my school offered a diagnostic test which I completed with a 100% score, a second diagnostic test which I also completed with 100% score and I even paid a symbolabs practice subscription. And I still fail.

Anonymous

Anonymous Thu 04 Nov 2021 11:03:46 No.13818012 Report

Quoted By: >>13818031

>>13817999
what are some examples of problems you have trouble with?

Anonymous

Anonymous Thu 04 Nov 2021 11:13:52 No.13818031 Report

Quoted By: >>13818050 >>13818055

>>13818012
I failed today because I struggled to differentiate a fracture with the polynominal way. I never had to do that before and suddenly I get this. Also, I dont know how to differentiate using quotient rule if I end up with a 0. Do I multiply using the 0 or do I just remove it? These are just some examples, im basically looking for good resources that cover everything instead of only 30% of what I have to know. I also dont have to know how to differentiate using log.

Anonymous

Anonymous Thu 04 Nov 2021 11:24:46 No.13818050 Report

Quoted By: >>13818092 >>13818095

>>13818031
Have you been skipping lectures or something? All that should have been covered.

If the top and bottom are both zero, just differentiate both and divide them.

Derivative of log is just 1/x.

For me the best way to study was to just read the book and then do lots of practice problems until I felt comfortable.

Anonymous

Anonymous Thu 04 Nov 2021 11:26:05 No.13818055 Report

Quoted By: >>13818092 >>13818095

>>13818031
maybe you should a read a standard textbook like one of Stewart's calculus books and work through the exercises there. if you're having trouble with some specific problem, you can post it in >>>/sci/sqt along with your attempt at the problem. almost everything you need to know about differentiating functions follows once you know how to differentiate a few standard functions and how to apply a few rules like the sum, product and chain rules.

Anonymous

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Anonymous Thu 04 Nov 2021 11:36:20 No.13818081 Report

Quoted By: >>13820258

>>13817979
Do people unironically have problems calculating derivates?

Anonymous

Anonymous Thu 04 Nov 2021 11:40:16 No.13818092 Report

Quoted By:

>>13818050
>>13818055
Thank you for your answers anons. I will check that textbook out and see if it can help me.

For the fracture problem, I meant something like
-1/(x-3)

I solved it like this
Derivative of -1 is 0, so:
(0)(x-3) - (1)(-1)
/
(x-3)^2

Then
0 - -1
0+1 = 1

Final answer:
1/(x+3)^2

Is this correct or not?

Anonymous

Anonymous Thu 04 Nov 2021 11:42:10 No.13818095 Report

Quoted By: >>13818120 >>13820181

Anonymous

Anonymous Thu 04 Nov 2021 11:53:59 No.13818120 Report

Quoted By: >>13818143

>>13818095
Yes that looks correct, if you're not sure plug it in to Wolfram Alpha, but only AFTER trying to solve it yourself first. I was a physics TA and so many students thought they could learn by just reviewing the solutions but you HAVE to solve things on your own to get any real practice.

Anonymous

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Anonymous Thu 04 Nov 2021 12:00:24 No.13818143 Report

Quoted By: >>13820258

>>13818120
>Literally solved this quickly while on my phone
>symbolabs says correct
>incorrect on the exam

Im gonna drop out and just day trade if I manage to fail one more time

Anonymous

Anonymous Thu 04 Nov 2021 23:46:29 No.13820181 Report

Quoted By:

>>13818095
yeah you got it right
the professor probably wanted you to do it this way
-1/(x-3)
= -(x-3)^-1
derivate = -1*-(x-3)^-2 * 1
=1/(x-3)^2

Anonymous

Anonymous Fri 05 Nov 2021 00:17:46 No.13820258 Report

Quoted By:

>>13818081
Yes. Look up dyscaculia.
>>13818143
Just drop the fucking class and choose a different game plan, anon. Dreams are made to be crushed.

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