Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: √ ∞ ≠ ≤ ≥ ≈ ⇒ ∈ Δ θ ∴ ∑ ∫ π -

Login

Username

Password

Not registered yet?

#1 2012-10-26 06:56:55

PrissyMiss
Novice

Offline

Derivative

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

#2 2012-10-26 07:01:57

zetafunc.
Guest

Re: Derivative

What do you need help with exactly?

#3 2012-10-26 07:15:55

PrissyMiss
Novice

Offline

Re: Derivative

I need to find the derivative of the function

#4 2012-10-26 07:17:22

zetafunc.
Guest

Re: Derivative

Do you know the quotient rule?

#5 2012-10-26 07:17:32

PrissyMiss
Novice

Offline

Re: Derivative

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

#6 2012-10-26 09:16:15

PrissyMiss
Novice

Offline

Re: Derivative

I do know the quotient rule

#7 2012-10-26 15:34:22

bobbym
Administrator

Offline

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.

#8 2012-10-26 18:12:02

bob bundy
Moderator

Offline

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

#9 2012-10-26 18:23:33

bobbym
Administrator

Offline

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.

#10 2012-10-27 07:10:16

PrissyMiss
Novice

Offline

Re: Derivative

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

#11 2012-10-27 07:21:10

bobbym
Administrator

Offline

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.

Board footer

Powered by FluxBB