1. Mathematically show that (m1)i=1m(wx(i)+by(i))xj(i)=(m1)i=1mD(k)XWhereXisa[mn]matrixsuchthatX=[x1x2xn]=x1(1)x1(2)x1(m)x2(1)x2(2)x2(m)xn(1)xn(2)xn(m). xj(i)= the element in the ith row of column j of X x(i) represents the ith row of X k=Xw+by D(k) is a transformation that creates a diagonal matrix whose nonzero entries correspond to the individual entries in vector k : D(k)=k1000000km