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NLA Quiz 1
NLA Quiz 1
7 terms
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StudBud Administration
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Basics of numerical linear algebra
Flashcards
7 cards
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Practice quiz
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Questions
7
Answers
1
If x = y = [1 1 1]^T then trace(x*y^T) has what value?
3
4
2
6
2
The cost in flops of multiplying two n-by-n matrices is
O(n)
exponential in n
O(n2)
O(n3)
3
In IEEE double precision arithmetic the unit roundoff is approximately
10-8
10-12
10-16
10-1
4
If A is singular, does it have a zero eigenvalue?
No
Yes
5
The condition number of a square matrix and the distance of that matrix to singularity are
Unrelated.
Not understood.
Reciprocals.
The same.
6
Which of these people is a winner of the ACM A. M. Turing Award?
Elvis Presley.
Alan Turing.
James Hardy Wilkinson.
Frank Sinatra.
7
If u and v are nonzero vectors the rank of uv
T
is
1
-1
0
2
