Question

can someone help me with Vector Algebra????

Answer 1

yes, what's the question?

Answer 2

to start with a definition :

a vector (a,b,c ...) is any abstract object whic is in a set where there are two operations : sum and product with a number(n,m,l...).
you can add two vectors and multiply a vector with a number .
These two operations have the propoerties as follow :
1) associative (sum ) (a + b ) +c = a+b+c
2)commutative (sum) a+b= b+a
3) the zero as a vector exists (sum) a + 0 = a
4) the opposite of a vector exists (sum) a + (-a) = 0

1) commutative (product) a * m = m* a
2) distributive (m+n) * a = m*a + n*a
3) the number zero " kills" every vector : a*0 = 0