3. (a) let a be a nxn matrix whose column space is not equal to r". what can you say about the null space of a, n(a)? (b) if an nxn matrix a has a mull space that is not trivial (not the zero space), does ax b have a solution for any b in r"?

the highest percentage for deaths in construction from highest to lowest is as follows: falls, struck by objects, electrocution, and caught-in/between. these four are collectively known as fatal four.

in the case of falls, the type that is responsible for the overall highest death in the category is falls from roofs.

the answer is su.k.my? ? co.kc

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,