<prompt> Nambari halisi a na b zinatoshelezaanzapmatrix 2 a -7 mwishopmatrix nyakati anzapmatrix 5 4 b endpmatrix mathbf0.Ingiza zilizoagizwa jozi a,b.  <response>: Kwa ujumla, mathbfv times mathbfw mathbf0 ikiwa na ikiwa tu vekta mathbfv na mathbfw ni sawia. Kwa hivyo, vekta beginpmatrix 2 a -7 endpmatrix na beginpmatrix 5 4 b endpmatrix ni sawia. Hivyo,frac52 frac4a fracb-7.Kutatua, tunapata a,b left frac8 5, -frac352 kulia. 