Recent content by likearollings

Hey thanks, Yeh it probably doesn't make any difference, Ill just use the closed brackets as it says on this website http://www.apastyle.org/learn/faqs/use-brackets.aspx Thanks

Prediction interval, which brackets!? Hi, this is a quick question for a piece of statistics coursework I am doing. I have made a prediction interval with an upper bound of let's say 30 and lower of 20. I just don't know which brackets to use open or close e.g. (20,30) [20,30] (20,30]...

I thought that it might involve some substitution like that but I didn't think it would cancel out and work that well. Thanks! great help. The limits of the integral all work out nicely too, thanks! Any ideas for the last part of the question? If you have a look at page 5 of this document it...

Hey sorry, I posted that right before you replied, was getting really frustrated (sure you know how it is)! but thanks, I am just reading what you have written and it is a great help, thank you so much

Thanks for all the replies... I have managed to do the first problem. Now I just need help with the wordy question at the end. Any help will be massively appreciated

I am not sure which small angle formula to use, Taylor series or sine, or how to get the RHS of that equation...

Homework Statement http://img684.imageshack.us/img684/4496/fourier.png Homework Equations http://en.wikipedia.org/wiki/Small-angle_approximation The Attempt at a Solution This is part of a larger question, I have underlined in Red the areas I am struggling with and have cut out...

I managed to do it using \cos a \sin b = (\sin (a+b) - \sin(a-b))/2 PROBLEM SOLVED!

Thanks, I managed to do it using \cos a \sin b = (\sin (a+b) - \sin(a-b))/2 PROBLEM SOLVED!

Thanks! I will give that a go

I don't think this is to be done with mathematical induction. I ended up with these massive identities and really long formulas, Is there another way?

Hi thanks for the reply, No, don't know why I didn't think of that, Will give it a go now.

Homework Statement Prove http://img847.imageshack.us/img847/9428/trig.png Uploaded with ImageShack.us Homework Equations I am not quite sure how to prove this, I can see it involves using a double angle formula (see http://mathworld.wolfram.com/Double-AngleFormulas.html)...

I am not quite sure how to prove this, I can see it involves using a double angle formula (see http://mathworld.wolfram.com/Double-AngleFormulas.html). I have tried working backwards but to no avail. Any ideas? http://img847.imageshack.us/img847/9428/trig.png Uploaded with...

Thank you SO MUCH for the overwhelming response, I managed to filter through all the replies and found a lot of correct answer telling me that i had to: differentiate with respect to x and then again with z. again thank you so much