Digite m e n. m = 3 n = 4 Digite uma matriz mxn. 1.9 1.0 -1.7 1.6 0.0 2.5 -2.8 -3.5 -0.5 -2.0 1.3 1.0 0 1.9 1.0 -1.7 1.6 1 2.5 -2.8 -3.5 0.0 2 1.3 1.0 -0.5 -2.0 2.5