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#1 2012-10-25 07:56:55

PrissyMiss
Member
Registered: 2012-10-25
Posts: 6

Derivative

f ' (x) = x + (sqrt (3x))
            -------------------
               3x − 5

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#2 2012-10-25 08:01:57

zetafunc.
Guest

Re: Derivative

What do you need help with exactly?

#3 2012-10-25 08:15:55

PrissyMiss
Member
Registered: 2012-10-25
Posts: 6

Re: Derivative

I need to find the derivative of the function

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#4 2012-10-25 08:17:22

zetafunc.
Guest

Re: Derivative

Do you know the quotient rule?

#5 2012-10-25 08:17:32

PrissyMiss
Member
Registered: 2012-10-25
Posts: 6

Re: Derivative

so far I got to the point                    .5           -.5     
                                             -4.5x     - 7.5x      - 5
                                            ----------------------------
                                                                2
                                                      (3x-5)

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#6 2012-10-25 10:16:15

PrissyMiss
Member
Registered: 2012-10-25
Posts: 6

Re: Derivative

I do know the quotient rule

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#7 2012-10-25 16:34:22

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 84,516

Re: Derivative

Hi;

so far I got to the point                    .5           -.5     
                                             -4.5x     - 7.5x      - 5
                                            ----------------------------
                                                                2
                                                      (3x-5)

I can not read that.


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

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#8 2012-10-25 19:12:02

bob bundy
Moderator
Registered: 2010-06-20
Posts: 6,308

Re: Derivative

hi   PrissyMiss and bobbym

I'm thinking that means

It is not quite what I'm getting:


PrissyMiss: You seem to have lost the root 3 s.

Bob


You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

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#9 2012-10-25 19:23:33

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 84,516

Re: Derivative

Hi Bob;

Your answer is what I am getting too.


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

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#10 2012-10-26 08:10:16

PrissyMiss
Member
Registered: 2012-10-25
Posts: 6

Re: Derivative

Why are the exponents still in there after you put it in radicals?/

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#11 2012-10-26 08:21:10

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 84,516

Re: Derivative

The exponents are powers of x.


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

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