IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => Subject Doubts => GCE AS & A2 Level => Math => Topic started by: Sorceres on March 27, 2010, 08:41:58 am

Title: integrate cosec^2x
Post by: Sorceres on March 27, 2010, 08:41:58 am

helpp!!1

how to intergrate cosec^2x to -cot x??

Title: Re: integrate cosec^2x
Post by: luluabdl on March 27, 2010, 01:49:22 pm

Quote from: Sorceres on March 27, 2010, 08:41:58 am

helpp!!1

how to intergrate cosec^2x to -cot x??

Isn't this already a rule found in the formula booklet given in the exam? That the integral of cosec²x = -cot x.
Actually its under the rules in the C3 differentiation section, when f(x) = cot x  f'(x) = -cosec²x. So we just reverse it when we need to integrate.

Title: Re: integrate cosec^2x
Post by: Saladin on March 27, 2010, 02:11:37 pm

that shub be suffice.

this is an further differentiaion  question found in C3

please resort to book for more help

also, formulas are present in formula book.

Title: Re: integrate cosec^2x
Post by: astarmathsandphysics on March 27, 2010, 06:57:35 pm

It is a standard integral

Title: Re: integrate cosec^2x
Post by: Saladin on March 27, 2010, 07:01:38 pm

yea, i know, but boy am i happy i got here b4 u.

hehe

finally beat u to sth after a long time.