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Applied Linear Algebra
Game Code: 1587962
English
19
Public
Review of python
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ydurova
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Add code to plot the figure.
plt.plot([0,2],[0,2],"r") plt.plot([0,-1],[0,3],"k")
20
What output will be shown?
18
10
How to multiply two matrices in Python?
A@B, np.dot(A,B)
5
How you multiple elements by elements of two matrices in Python?
A*B
5
How to create 4x4 identity matrix in Python?
np.eye(4)
10
How to find determinant in Python? What is determinant of given matrix?
np.linalg.det(C), -24
15
How to find LU decomposition in Python and what values are returned?
P,L,U=np.linalg.lu(A), where P-permutation matrix, L -lower, U -upper triangular matrices
15
How to plot this figure?
plt.imshow(A)
15
What is the output?
5x5 identity matrix
10
What function returns you inverse of the matrix?
np.linalg.inv()
5
What are eigenvectors and eigenvalues? How to calculate it in Python?
Eigenvector changes by a scalar factor when linear transformation is applied to it. Eigenvalues are levels of scaling. vec,val=np.linalg.eig(M)
15
What output will be?
[[25, 8], [ 1, 2]]
10
How to check if vectors are orthogonal?
Dot product is 0
5
Determine if matrix stochastic?
No
5
Symmetric matrices have orthogonal...
Eigenvectors
15
How to find norm of vector in Python?
np.linalg.norm()
5
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