Recent content by lakitu

hey thank you for replying i will give that a go :)

coordinate help please :) Hi i just got my home work but don't know where to start. Any help on this just to get me started would be great:) I want to make sure I am doing it right Thank you Work out the coordinates where this line meets this plane. Line x = -4 t + 4, y = -4 t + 6...

i see, what about Evaluate | u | does that make sense?

hi there how would you go about evaluating a matrices? for example. evaluate A A= (-3) (11) (6) i need to know this for my homework? it sounds simple but my book does not cover this. Any help would be great. Kind Regards Lakitu

thank you for your comments :)

hi there would anyone be able to give me a link or guidence as how i would go about finding the inverse of A? I have a book that tells me add subtract and multiply. the question is this: find the inverse of A A = (19 81) (2 10) sorry for the crude matrices. any help would be...

hi there, my teacher gave me the following question: 1. Evaluate AB A= (19 81) (2 10) B= (9 -6) (6 -7) The book i have tells me how to add multiply and subtract matrices, i don't understand what evaluate AB means, is it multiply>? Kind regards lakitu

no i stll don't get it:(

i get it AC^ = AB^ + BC^ :)

Could you explain to me how you work out that the precise r is 3\sqrt{2} ? Thank you

wow at last! I think i am going to have to change my username after this topic! thanks

i found this example in my textbook, r = sqrt(x*x + y*y) a = atan(y / x) which would give me the distance of 4.24 for r (the origin to 3,3) so would the answer be (4.24,45deg)? i did read your recomendations but struggled to figure those out :) am i on the right lines ?

i read that the position of the point is defined by its direct distance from the origin (O) do you measure this with a ruler? I am just unsure :)

im not sure what you mean? i can only think the distance is 6 if its not 3 what i originally believed :)

your right, i guess i assumed it was a little tougher than it was :) to arildno: Is the angle 45 deg ? would that make the answer (3,45) kind regards lakitu