# A
4 0 2
0 5 3
2 3 6

# Eigenvalues of A
1.63463 4.33626 9.02911

# Eigenvectors of A
-0.533741 -0.562714 0.631247
-0.789159 0.599687 -0.13268
0.30389 0.568971 0.764149

# R=sqrt(A)
1.93856 -0.0819276 0.485048
-0.0819276 2.12647 0.686608
0.485048 0.686608 2.30072

# R^T*R (should equal A)
4 0 2
0 5 3
2 3 6

# A^-1
0.328125 0.09375 -0.15625
0.09375 0.3125 -0.1875
-0.15625 -0.1875 0.3125

# Q=isqrt(A)
0.552621 0.0651912 -0.135961
0.0651912 0.528101 -0.171346
-0.135961 -0.171346 0.514446

# Q^T*Q (should equal A^-1)
0.328125 0.09375 -0.15625
0.09375 0.3125 -0.1875
-0.15625 -0.1875 0.3125
