# Odd differentiation questionWatch

#1
I get how most types of differentiation work, but for this question, I got very confused since what I got was clearly wrong compared to the answer.

0
4 weeks ago
#2
(Original post by OJ Emporium)
I get how most types of differentiation work, but for this question, I got very confused since what I got was clearly wrong compared to the answer.

How in the world did you differentiate that??

Look at what the quotient rule says.
0
#3
(Original post by RDKGames)
How in the world did you differentiate that??

Look at what the quotient rule says.
Shoot
I did, however, use the quotient rule to get the following:

(4t^4 +12t^2)/t^4 + 2t^2 + 1
0
4 weeks ago
#4
(Original post by OJ Emporium)
Shoot
I did, however, use the quotient rule to get the following:

(4t^4 +12t^2)/t^4 + 2t^2 + 1
That’s wrong too.

You should really post your working out when asking questions like this.

I’m coming off now so if nobody resolves your issue here then I’ll return in the morning.

P.S. Notice how the answer has the denominator factorised... so don’t expand yours!
0
#5
(Original post by RDKGames)
That’s wrong too.

You should really post your working out when asking questions like this.

I’m coming off now so if nobody resolves your issue here then I’ll return in the morning.

P.S. Notice how the answer has the denominator factorised... so don’t expand yours!
Noticed I made a phat mistake by forgetting that the indices had a fraction(if that makes any sense)
Also goodnight my man
0
4 weeks ago
#6
(Original post by OJ Emporium)
Noticed I made a phat mistake by forgetting that the indices had a fraction(if that makes any sense)
Also goodnight my man
Btw.Just some advice the product rule is (fg)'=f'g+fg'. The quotient rule is very similiar, say we want (f/g)', this is (f'g-g'f)/g^2. As you can see the numerator of this is very similiar to the product rule but with a minus.

Follow the formula, you will end up multiplying top and bottom of the fraction by 3t^1/3, then the numerator simplifies nicely.
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