Recent content by htdIO

It is a bit frustrating. Thanks for all the answers, I've realized my mistake. I somehow messed forgot the right definition for dot product. Just grabbed some old books and everything seems to work out now. Sorry and thanks again for all the help.

No, the book we use makes the assumption that we know how to calculate the dot product and only introduces dyadics. I know how to calculate the dot product of 2 vectors if they were something like this: (4i + 2j) (dot) (i + j) = 4+2 = 6. But those vectors are of the same size. How do you go...

Question If a = i - 2j + 2k b = 4i - 3j M = 3ii + 2ij - ji + kj. M is a dyadic. Determine a\bullet2M\bulletb Homework Equations The Attempt at a Solution This isn't really homework, but rather just some self study to help me understand some of my work better. Attached is the...

Halfway through I actually remembered the quotient rule, which should make it quicker ;) Anyway, thanks again for getting me on the right track!

Haha, aah thanks. I must be more tired than I thought... I'm guessing the only way to 'see' this (like they did it), is by recognizing it and a bit of practice?

Hi and thanks! I do know it. Just not quite sure how I should be applying it here? I've scribbled quite a bit down here now, trying to combine this with the product rule. Or am I heading in the wrong direction?

Hi all, This is not strictly a DE question, but I came across this while working on one. This isn't the first time I got this and I just can't remember this from my 1st year maths. Some knowledge would be greatly appreciated. In the answer they do the following...