<prompt> Tafuta idadi ya nambari zilizoagizwa za a,b,c,d za nambari halisi ilianzapmatrix a b c d endpmatrix-1 upya amriarraystretch1.5 anzapmatrix frac1a frac1b frac1c frac1d endpmatrix renewcommandarraystretch1.  <response>: Ikiwa beginpmatrix a b c d endpmatrix-1 newcommandarraystretch1.5 beginpmatrix frac1a frac1b frac1c frac1d endpmatrix renewcommandarraystretch1, basianzapmatrix a b c d mwishopmatrix newcommandarraystretch1.5 anzapmatrix frac1a frac1b frac1c frac1d endpmatrix renewcommandarraystretch1 mathbfI.Hii inakuwanewcommandarraystretch1.5 anzapmatrix 1 fracbc fracab fracbd fracc a fracdc fraccb 1 endpmatrix renewcommandarraystretch1 mathbfI.Kisha 1 fracbc 1, hivyo fracbc 0, ambayo ina maana b 0. Lakini basi frac1b haijafafanuliwa, kwa hivyo kuna 0 ufumbuzi. 