find the derivatives of x4+x3-2x2/x+2

- gerald

find the derivatives of x4+x3-2x2/x+2

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- anonymous

first do the long divison and then use partial fraction method to integrate

- gerald

pliz can you do that for me

- anonymous

where are you avnis
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## More answers

- anonymous

hey i am here

- anonymous

hey

- anonymous

so that length question i think i solved it

- anonymous

ok

- anonymous

so working on this question i know you can find common terms in this question i am just trying to find that

- anonymous

i mean i am refering to gerald's question

- anonymous

lets do long division

- anonymous

hmm okay, but i was thinking if we just rearrange and ge trid of the common terms

- anonymous

here http://www.skrbl.com/166859043

- anonymous

sorry
here http://www.skrbl.com/166859043

- anonymous

sorry again here

- anonymous

http://www.scriblink.com/index.jsp?act=phome&roomid=36&KEY=F71D8E165FCC9B3AA0E17782EDB164F0

- anonymous

i hope that works

- gerald

can those link lead me to answer

- anonymous

yes
im typing solution

- anonymous

http://www.scriblink.com/index.jsp?act=phome&roomid=36&KEY=F71D8E165FCC9B3AA0E17782EDB164F0

- anonymous

did it work

- anonymous

here im over here http://www.scriblink.com/index.jsp?act=phome&roomid=36&KEY=F71D8E165FCC9B3AA0E17782EDB164F0

- anonymous

oh i solve dit on the the other one :P

- anonymous

hehe, its not bad

- anonymous

http://www.skrbl.com/166859043

- anonymous

you get integral x^3 - x^2

- anonymous

so basically gotta integrate x^3 -x^2

- anonymous

and that will give you ((x^4)/4)-(x^3/3) + C

- anonymous

yes

- gerald

those site are not active

- anonymous

u just want to find the first derivative right?

- anonymous

are we talking about derivatives or integrals? because you just integrated

- anonymous

uhm cantorset...do you know what you are talking about?

- anonymous

according to the questions, it says "derivatives" , right?

- anonymous

you can use the quotient rule to solve this if you like

- anonymous

do ther derivative with quotient rule.
((x+2)(4x^3+3x^2-2x^2)-(x^4+x+3-2x^2))/(x+2)^2

- anonymous

that is the correct approach, ignore whatever cantorset mentioned its nonsense

- anonymous

d/dx of f(x)/g(x)=( f'(x)g(x)-f(x)g'(x))/(g(x))^2

- anonymous

okay, so when u want to find the derivative, here , its better if u use the 'u/v' rule..
which is
\[(v u \prime-u v \prime )/v ^{2}\]

- anonymous

wher u =numerator & v=denominator

- anonymous

exactly, thats correct @avalanche :)

- anonymous

great minds think alike :)

- anonymous

yupp :):)

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