- #1
mohdhm
- 42
- 0
hello again,
I'm once again stumped, i was asked to find the rank and nullity of the projection u onto v so here is the given:
T(u)=ProjvU, where v = <2,4>
and this is what i did:
let u = <u1 , u2> and plugged everything in the projection formula and ended up with < 4 + 2(u1) , -16 + 4 (u2)> / sqrt(20)
how am i supposed to get the rank from that, it is not even a matrix! all i can think of is that a projection diagram looks like a right triangle and i would assosiate that with triangular matricies and triangular matricies have a pivot in every column, therefore the rank should be 2. and therefore nullity is 0 .
am i on the right track? thanks in advance.
I'm once again stumped, i was asked to find the rank and nullity of the projection u onto v so here is the given:
T(u)=ProjvU, where v = <2,4>
and this is what i did:
let u = <u1 , u2> and plugged everything in the projection formula and ended up with < 4 + 2(u1) , -16 + 4 (u2)> / sqrt(20)
how am i supposed to get the rank from that, it is not even a matrix! all i can think of is that a projection diagram looks like a right triangle and i would assosiate that with triangular matricies and triangular matricies have a pivot in every column, therefore the rank should be 2. and therefore nullity is 0 .
am i on the right track? thanks in advance.