Help with INTEGRATION questions plz!! (1 Viewer)

[excellence1]

Find the exact area bounded by the parabola y=x^2 and the line y= 4-x

 

[Shuuya]

Oh man the numbers are horrible ._.

 

[excellence1]

Tell me about it :/

 

[Paradoxica]

Oh man the numbers are horrible ._.

Tell me about it :/

It's a surprisingly nice answer in the end.

 

[Shuuya]

It's a surprisingly nice answer in the end.

I WolframAlpha'd it but gave up on the algebra

 

[Nailgun]

 

[Paradoxica]

 

[excellence1]

its better to put it in surds, than decimal points

 

[Nailgun]

its better to put it in surds, than decimal points

I'm assuming this was a question, and not a statement lol
Yeah, it's pretty much always expected to put your answer in exact form unless otherwise specified

 

[Paradoxica]

Oh, I certainly hope one of these messy surds appears in my 2u exam, that way, I can bash through the definite integral problem faster than the speed of light (not really but y'know) and everyone else is left in the dust.

 

[excellence1]

“ 6a) differentiate 2x^2+1/ 3x^2 -4 ( i got the answer for this -22/(3x^2-4)^2

b) Hence evaluate(q. on the board) ”

 

[Paradoxica]

“ 6a) differentiate 2x^2+1/ 3x^2 -4 ( i got the answer for this -22/(3x^2-4)^2

b) Hence evaluate(q. on the board) ”

??? Are you asking us or is this a story?

 

[davidgoes4wce]

“ 6a) differentiate 2x^2+1/ 3x^2 -4 ( i got the answer for this -22/(3x^2-4)^2

b) Hence evaluate(q. on the board) ”

I think you needed to use the Quotient Rule:

 

[Nailgun]

Oh, I certainly hope one of these messy surds appears in my 2u exam, that way, I can bash through the definite integral problem faster than the speed of light (not really but y'know) and everyone else is left in the dust.

It's not like a parallel universe could exist where you drop 4U anyways lol, so it matters not

 

[davidgoes4wce]

Im assuming the question was set out like this and you were asked to find the derivative of that:

 

[excellence1]

I'm assuming this was a question, and not a statement lol
Yeah, it's pretty much always expected to put your answer in exact form unless otherwise specified

Thanks for the heads up .

 

[excellence1]

Guys, sorry about that. Don't worry, the question is done and dusted ..."faster than the speed of light"!