04-27-2021, 06:47 PM
My calculator is not giving me the correct matrix calculation.
What is the best command for finding Inverse matrix ? same happens when i use inv(Matrix that i want to invert)
[attachment=9421]
Code:
2568.0000 -2568.00 1 0
2568.0000 2568.00000 0 1
3852.1284 -2568.00 1 0
2568.0000 3852.12840 0 1
3536.9834 -3411.36 1 0
3411.3569 3536.98344 0 1
That is Matrix A
Matrix O
-4851346.102
-6513502.217
-4850456.274
-6513809.817
-4850472.619
-6513149.860
TRN(A)*A should be
58770372.8276 0.0000 9957.1118 8547.3569
0.0000 58770372.8276 -8547.3569 9957.1118
9957.1118 -8547.3569 3.0000 0.0000
8547.3569 9957.1118 0.0000 3.0000
Inverse(TRN(A)*A) should be
7.29974E-07 -1.81352E-22 -0.002422813 -0.002079784
-2.53893E-21 7.29974E-07 0.002079784 -0.002422813
-0.002422813 0.002079784 14.30029098 0
-0.002079784 -0.002422813 -4.54077E-14 14.30029098
But I get different numbers than in Excel, im using Shift + devide key to inverse. Can someone explain, and later in my calculation i get wrong answer because of Inverse mistake.
TRN(A)*O should be
-1.03972E+11
-23394687040
-1.46E+07
-1.95E+07
- I get this OK, But my issue is here
M=( Inverse((TRN(A)*A) * (TRN(A)*O)
-0.6929740
0.2395352
4853740.802
6514666.637
But I get:
0.6929740
-0.2395352
-4853740.802
-6514666.637
Can someone explain why this is happening? - Im not writing a program im manually doing the calculation on Home screen.
And later
A*M+O should be
0.017
-0.011
-0.023
-0.017
0.006
0.027
but I get
0.03314
-0.01158
etc. - WRONG
I have tried to multiply the M matrix with (-1) but again calculation of O seems wrong.
What is the best command for finding Inverse matrix ? same happens when i use inv(Matrix that i want to invert)
[attachment=9421]