Chol-QR
Authored by Francoise Tisseur
Mathematics
3rd Grade
Used 1+ times
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6 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
In a Cholesky factorization A = RTR the matrix R is
Upper triangular
Lower triangular
full
diagonal
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
A symmetric positive definite matrix has leading principal submatrices that are
Symmetric but not positive definite
Symmetric and positive definite
Symmetric, positive definite, and orthogonal
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Every real m-by-n matrix A has a unique factorization A = QR with Q m-by-m orthogonal and R upper triangular.
True
False
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
A Householder matrix is
A reflection
A rotation
Neither of the above
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
The only matrix that is both symmetric and orthogonal is the identity matrix.
True
False
6.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Which of the following people has not done important work in numerical linear algebra?
Alan Turing
Benedict Cumberbatch
James Wilkinson
Wallace Givens
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