︠1c30b95b-1d33-4677-aa96-82f957409b96s︠ A = matrix(2, 2, [1, 2, 3, 4]); A A.subdivide(1, 1) ︡ba963843-7d7b-40bf-8ddb-7af234428b60︡{"stdout":"[1 2]\n[3 4]"}︡{"stdout":"\n"}︡{"done":true}︡ ︠5ed762d0-7aa9-4375-8f0e-155112ea33dbs︠ A ︡fb3c38d8-65c5-4d24-a6e0-173a77550c7d︡{"stdout":"[1|2]\n[-+-]\n[3|4]\n"}︡{"done":true}︡ ︠ffc38098-f04e-4564-b48c-2d15c9593db0s︠ show(A) ︡5a96b19b-7f35-4603-b437-884a2d78501e︡{"html":"