As I don't like latex - I've put the question in a word file.
I'm a bit lost as to why I'm having a problem here - presumably I'm meant to use a double angle formula somewhere to get the x to x/2, but I can't figure out when.
Hope someone can help
yeah - I know that's what I need to change. I just don't know how though
Have a go..... Post up your attempt.
It takes me about 10 mins to mess around with equation editor - I'm working on a mac, and everything takes 10x as long.
Will put up my workings soon
I've just come back to working on this one.
insparato - I'm exactly at the stage where I've got:
-e^-y=-ln(cosecx +cotx) + c
and I agree that I need to mess around with the ln part.
But through the notes that I've created - nothing has worked, and putting all this mess into equation editor would take too long.
If I split them apart, I'm still unsure how to get from x to x/2 as no formula I can remember appears to help me.
I can see where you would be getting tan(pi/2), but it's in the form cot(pi/2), hence is well defined.
I suggest you make the effort to learn latex, it is worth it in the long run.
I've not come across those identites b4 i don't think - where are they from?
I'm happy with everything up to this point though. Are the identities derivations from C3 double angles?
I do need to learn Latex though, I didn't find the thread on it that helpful though.
Thnx for all the help - I've got it sorted out now.
This was a much harder question than the rest of the exercise - I don't remember those trig formula's so well.
Okay just as long as you do understand what is going on. You need to know them trig like the back of your hand for FP1.