Question

Find dy/dx:

y= 1/u^2 u=2x+3

I get 2x/(2x+3)^2

Answer 1

the easy form is mus include :

-name of a drug
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-short +long term effect
-how is it ingested
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-anyother intersting facts

Answer 2

-4/(2x+1)^3

Answer 3

plz help me

Answer 4

i have to wirte an essay

Answer 5

I think you are in the wrong problem

Answer 6

what

Answer 7

i need to write my health easy idont want to fial

Answer 8

this is math

Answer 9

idc

Answer 10

can you go to the english section

Answer 11

i posted my question plz

Answer 12

you posted your question in my math question

Answer 13

plz

Answer 14

am sorry but can you help me

Answer 15

plz

Answer 16

if you go to "Home" at the top of the page and then click "English" I think, that is where you need to be

Answer 17

but theres no peole online yo help me i posted it 3x but no on helped me

Answer 18

I am a student just like you

Answer 19

To do these problems, I suggest utilize the chain rule as opposed to subbing in u into the original equation.

Answer 20

I got (2x+3)^-2 (2x)
then i got my answer

Answer 21

y=1/u^2, rewrite as y=u^-2 to make it easier to differentiate. Using the chain rule. y'=-2u*u'. Find u' by differentiating u=2x+3 with respesct to x. Sub in u and u' into y'=-2u*u' and you have your solution.

Answer 22

plz

Answer 23

I really messed that one up. I don't know what I was doing. Now I get the answer:
1/(-2x-3)^3

Answer 24

you are missing a coefficienet of 4

Answer 25

ok I am going to take it step by step now:

1st step is to get u^-2 and 2

Answer 26

differentiate y to get y'=-2u^-3*u'. Substitute in u and u' and that's it.

Answer 27

yes then I get -2u^-3 (2)
then
-2(2x+3)^-3 (2)
Am I good so far

Answer 28

yeah that's the right answer

Answer 29

ok then I get
(-4x-6)^-3 (2)

then I am wanting to make (-4x-6)^-3 into 2(-2x-3)^-3
This is where I think I am making the mistake

Answer 30

no you were already done. -2(2x+3)^-3 (2) is correct because the -2 multiples with the 2 to become -4. I don't really follow what you did in your last response

Answer 31

so will my answer be 2/-2(2x+3)^3

Answer 32

I feal like I need to do something with (2)

Answer 33

your -3 exponent is only applied to 2x+3 and not the -2, there is no need to bring it down

Answer 34

ok then it will be -4/(2x+3)^3

Answer 35

yes

Answer 36

Thank you for working through this problem with me and not just giving me the answer