SQA Higher- Vectors
I just cannot understand this question but i know the answer is (-5,-5, 7) I really want to how it's done, this is the question:
VABCD is a pyramid with the rectangle base ABCD The vectors of AB , AD and AV are given by: AB = 8i+2j+2k AD=-2i+10j - 2k AV= i +7j +7k
Express CV in component form ?
Help will be greatly appreciated
Provide a counter example to prove why the following is not a vector space.
A= ((x,y) within R2 / x>=0)
I'm not sure why this is not a vector space. If I remember correctly, a vector space is commutative and associative?
The Del operator
i'm going through some tricky vector product arrangements and rearrangements. some involve expressions like phi del (i mean the symbol phi followed by the operator del) - no dot or cross product involved. what exactly does this mean? is it the same as del phi? simply the gradient of phi? i can't find any websits which clarify this