Recent content by jessicamorgan

Hi, thanks for replying. I'm unsure of the question, I don't understand how to solve or what the cosine has to do with it. :/

Actually, I'm not getting that .. please can you explain to me how you've used the chain rule here :)

Hi, yes but still am unsure what alpha and beta can be. As k=I=1. so can alpha and beta just =1 also without loss of generality.

https://uploads.tapatalk-cdn.com/20170308/8af62c27e7d7b4f0f42493aa98c8a5a1.jpg https://uploads.tapatalk-cdn.com/20170308/d3e5438f19ae4ba0910a2ffa52b9ff42.jpg For this question I have substituted feta and t into the equation, but am unsure what to do after that. Please can anyone point me in the...

https://uploads.tapatalk-cdn.com/20170308/78feec183e9672f563c5e41b4c52e1d9.jpg https://uploads.tapatalk-cdn.com/20170308/4ad8560adf9e090969c38515a31d1407.jpg Please help, I know the definition of a cosine of a matrix is cos(a) = I-1/2!A^2+1/4!A^4-... But I am unsure how this would help me find...