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C3 integral

Please see attached. Mark scheme didn't help me much

Any help greatly appreciated, thanks
image.jpg511.7KB
Reply 1
Avatar for B_9710
B_9710
18
I think you have the integral of cosec2(x) \text{cosec}^2 (x) mixed up with the integral of cosec(x) \text{cosec}( x) .
Original post by B_9710
I think you have the integral of cosec2(x) \text{cosec}^2 (x) mixed up with the integral of cosec(x) \text{cosec}( x) .



Indeed I did; I don't really know how to find integral of (coesecx)^2 though
Original post by hi-zen-berg
Indeed I did; I don't really know how to find integral of (coesecx)^2 though


You would do the integral of 1 + cot^2x for cosec^2(x) :smile:
Reply 4
Avatar for B_9710
B_9710
18
Original post by hi-zen-berg
Indeed I did; I don't really know how to find integral of (coesecx)^2 though


Consider the derivative of cot⁡x \cot x and then tell me.
Original post by B_9710
Consider the derivative of cot⁡x \cot x and then tell me.


Gosh I end up integrating 1 + cosec^2x
Original post by Shiv Loves Maths
Gosh I end up integrating 1 + cosec^2x


Original post by B_9710
Consider the derivative of cot⁡x \cot x and then tell me.


holyyyy. at least im aware now. integral of -(cosecx)^2 is cotx

lol wut thanks a lot

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