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Question

Please just mark true or false no explanation needed

Screen Shot 2020-06-26 at 12.21.52 pm.png
Statement
True/False
(a)
Let u and v be vectors in R3. If u x v = 0, then either u = 0 or v = 0.
(b) Let u,v and w be vectors in R . Then (u . v) x w = u . (vxw)
(c) Let A and B be square matrices. If AB = AC, then B = C.
(d)
A linear system of 3 equations in 4 unknowns never has any solutions as
there are insufficient equations.
(e)
If a system of linear equations has two different solutions, it must have
infinitely many solutions.
(f)
Let A =
-3
2
-6
The vector
is in the null space of A.
(g)
If A and B are n x n matrices, then (AB)" = A" BT.
(h)
If A is a 3 x 3 matrix, then det (3A) = 3 det (A).
(i)
is an eigenvector of
2
4
3
()
The set
vectors.

Step-by-step answer

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Subject: Calculus, Math

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