integration (2 Viewers)

lolokay

Active Member
Joined
Mar 21, 2008
Messages
1,015
Gender
Undisclosed
HSC
2009
Re: 回复: Re: integration

what's the derivative of sin-1x?
 

Dumbledore

Member
Joined
Sep 11, 2008
Messages
290
Gender
Male
HSC
2009
x = sin@
dx= cos@ d@
sqrt(1-x^2) = sqrt(1-sin^2(@))= cos(@)
integral(arcsin(sin(@))dx
@^2
= sin^2x
 

shuning

Member
Joined
Aug 23, 2008
Messages
654
Location
Central Coast - Chatswood all the way :p
Gender
Male
HSC
2009
回复: Re: integration

sorry, you used u sub right??? i solved this question using u sub, and yeh i dont know what you did in the second line.

thanks
that's how ppl in china writes it....

i hardly came across some aus high school students writes it that way... he prob learnd it in uni LOL

NOOB AUS HIGH SCHOOL EDUCATION XD
 

Drongoski

Well-Known Member
Joined
Feb 22, 2009
Messages
4,255
Gender
Male
HSC
N/A
Re: 回复: Re: integration

No I 'invented' this approach long ago.


Zhege fangfa shi wo ziji faming de.
 
Last edited:

GUSSSSSSSSSSSSS

Active Member
Joined
Aug 20, 2008
Messages
1,102
Location
Turra
Gender
Male
HSC
2009
Re: 回复: Re: integration

lol greaaaaaaaaat question shuning =P

but actually quite a few people in australia write it the way drongoski did xD
...even my bogan math teacher

for example today he gave us a math joke:

FIND:
integral(1/cabin)d(cabin) .... xDD
 

Users Who Are Viewing This Thread (Users: 0, Guests: 2)

Top