Advanced Matrix Operations - Persian

Questions posted on ST Forums:

• Why we haven't used from numpy import allclose?

  Professor,Why we haven't used from numpy import allclose for this case of allclose at 6:37 like we used earlier in last lecture of Basic Matrix operations ?

  06-07M 30-40S sc256356
  
  
  Answer last updated on: Feb. 5, 2024, 5:49 p.m.

  ---

• Why I am getting this error?

  https://drive.google.com/file/d/1u3HPpFYs45v4TnSD8JFaeccn6cgdlUt-/view?usp=drive_linkPlease resolve this problem professor

  03-04M 30-40S sc256356
  
  
  Answer last updated on: Aug. 1, 2023, 2:40 p.m.

  ---

• svd

  Explain the uses of U and V_conjugate functions in svd. 

  05-06M 0-10S NandhiniMariyappan
  
  
  Answer last updated on: May 4, 2020, 2:39 p.m.

  ---

• U in SVD

  Could you please explain what is U and how it is calculated?

  05-06M 20-30S sreejapanikath
  
  
  Answer last updated on: May 4, 2020, 2:38 p.m.

  ---

• Error in code

  To practice i had created another matrix find its inverse and check whether its multiplication with it's inverse is giving an identity matrix or not. as you had said that multiplication with it's inverse gives an identity matrix so the result of allclose function has to be True but I am getting False. I am sharing the code please tell me where the mistake is?#calculating determinant of a matrixfrom numpy.linalg import detm=asmatrix(arange(1,10).reshape(3,3))print(m)print(det(m))[[1 2 3] [4 5 6] [7 8 9]] 6.66133814775094e-16from numpy.linalg import inv print(m) im=inv(m) print(im)[[1 2 3] [4 5 6] [7 8 9]] [[-4.50359963e+15 9.00719925e+15 -4.50359963e+15] [ 9.00719925e+15 -1.80143985e+16 9.00719925e+15] [-4.50359963e+15 9.00719925e+15 -4.50359963e+15]]#to check whether multiplication of a matrix with it's inverse matrix gives identity matrix or not from numpy import eye,allclose print(asmatrix(eye(3))) rs=im*m rs.shape print(rs) allclose(rs,asmatrix(eye(3)))[[1. 0. 0.] [0. 1. 0.] [0. 0. 1.]] [[ 12. 8. 8.] [-16. -8. 0.] [ 4. 0. 0.]]  Out[118]: False

  06-07M 50-60S Jainhruti1988
  
  
  Answer last updated on: May 3, 2020, 7:47 p.m.

  ---

• Doubt

  Can you explain how to find frobenius?

  04-05M 30-40S NandhiniMariyappan
  
  
  Answer last updated on: April 30, 2020, 1:56 p.m.

  ---