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pfeformat

? pfeformat;

Calculate

pfeformat-true

pfeformat: true;

m:[[1,2,3],[a,4,7],[...

inverse(m);

Calculate

pfeformat

? pfeformat;

Calculate

pfeformat-true

pfeformat: true;

m:[[1,2,3],[a,4,7],[...

inverse(m);

Calculate

pfeformat

Run Example
(%i1)pfeformat: true;
(%o1)                                true
(%i2)  m:matrix([1,2,3],[a,4,7],[1,5,7]);
                                  [ 1  2  3 ]
                                  [         ]
(%o2)                             [ a  4  7 ]
                                  [         ]
                                  [ 1  5  7 ]
(%i3) display(invert(m));
       [ 1  2  3 ]
       [         ]                            7
invert([ a  4  7 ]) = matrix([- -----------------------------, 
       [         ]              3 (5 a - 4) + 2 (7 - 7 a) - 7
       [ 1  5  7 ]
              1                              2
-----------------------------, -----------------------------], 
3 (5 a - 4) + 2 (7 - 7 a) - 7  3 (5 a - 4) + 2 (7 - 7 a) - 7
            7 - 7 a                           4
[-----------------------------, -----------------------------, 
 3 (5 a - 4) + 2 (7 - 7 a) - 7  3 (5 a - 4) + 2 (7 - 7 a) - 7
           3 a - 7                          5 a - 4
-----------------------------], [-----------------------------, 
3 (5 a - 4) + 2 (7 - 7 a) - 7    3 (5 a - 4) + 2 (7 - 7 a) - 7
                3                           4 - 2 a
- -----------------------------, -----------------------------])
  3 (5 a - 4) + 2 (7 - 7 a) - 7  3 (5 a - 4) + 2 (7 - 7 a) - 7

(%o3)                                done
(%i4) 
Run Example
pfeformat: true;
(%o1)                                true
(%i2)  m:matrix([1,2,3],[a,4,7],[1,5,7]);
                                  [ 1  2  3 ]
                                  [         ]
(%o2)                             [ a  4  7 ]
                                  [         ]
                                  [ 1  5  7 ]
(%i3) inverse(m);
                                     [ 1  2  3 ]
                                     [         ]
(%o3)                        inverse([ a  4  7 ])
                                     [         ]
                                     [ 1  5  7 ]
(%i4) 
Run Example
pfeformat: true;
(%o1)                                true
(%i2)  m:matrix([1,2,3],[a,4,7],[1,5,7]);
                                  [ 1  2  3 ]
                                  [         ]
(%o2)                             [ a  4  7 ]
                                  [         ]
                                  [ 1  5  7 ]
(%i3) tex(invert(m));
$$\pmatrix{-{{7}\over{3\,\left(5\,a-4\right)+2\,\left(7-7\,a\right)-7
 }}&{{1}\over{3\,\left(5\,a-4\right)+2\,\left(7-7\,a\right)-7}}&{{2
 }\over{3\,\left(5\,a-4\right)+2\,\left(7-7\,a\right)-7}}\cr {{7-7\,a
 }\over{3\,\left(5\,a-4\right)+2\,\left(7-7\,a\right)-7}}&{{4}\over{3
 \,\left(5\,a-4\right)+2\,\left(7-7\,a\right)-7}}&{{3\,a-7}\over{3\,
 \left(5\,a-4\right)+2\,\left(7-7\,a\right)-7}}\cr {{5\,a-4}\over{3\,
 \left(5\,a-4\right)+2\,\left(7-7\,a\right)-7}}&-{{3}\over{3\,\left(5
 \,a-4\right)+2\,\left(7-7\,a\right)-7}}&{{4-2\,a}\over{3\,\left(5\,a
 -4\right)+2\,\left(7-7\,a\right)-7}}\cr }$$
(%o3)                                false
(%i4) 

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