<prompt> Ikiwa mathbfA-1 anzapmatrix 4 6 -2 10 endpmatrix, na mathbfB frac12 mathbfA, kisha tafuta mathbfB-1.  <response>: Kutoka mathbfA-1 anzapmatrix 4 6 -2 10 endpmatrix,mathbfA anzapmatrix 4 6 -2 10 endpmatrix mathbfI.Tangu mathbfB frac12 mathbfA, mathbfA 2 mathbfB, hivyo2 mathbfB anzapmatrix 4 6 -2 10 endpmatrix mathbfI.Kwa maneno mengine,mathbfB anzapmatrix 8 12 -4 20 endpmatrix mathbfI.Kwa hiyo,mathbfB-1 anzapmatrix 8 12 -4 20 mwishopmatrix. 