Integration Help!! (1 Viewer)

[simonkey]

Can someone please tell me how the integral of 1/sin^2 x ( trying to type 1 on sin sqaured x) is equal to -cotx???

 

[ianc]

The best way i can think of doing that is using integration and t substitution - this is a useful method to know.

Here's how you'd do this question:

Hope this helps!

 

[Affinity]

It's in the tables

 

[jyu]

Can someone please tell me how the integral of 1/sin^2 x ( trying to type 1 on sin sqaured x) is equal to -cotx???

d(cotx)/dx = -cosec^2 x = -1/(sin^2 x),

integral of 1/sin^2 x = -cot x + c

:wave:

 

[simonkey]

AHHHHHHH!! I get it!!!! D'oh. Thanx for the help smart people.

 

[Slidey]

It doesn't matter if it is in the tables. You should also know how to derive it if you want to be a good maths student.