Question

B = (bij) 2x3 com bij = 4i – 3j. os elementos da primeira linha são:

Answer 1

$\large\boxed{\begin{array}{l}\rm b_{11}=4\cdot1-3\cdot1=4-3=1\\\rm b_{12}=4\cdot1-3\cdot2=4-6=-2\\\rm b_{13}=4\cdot1-3\cdot3=4-9=-5\\\rm os\,elementos\,da\,primeira\,linha\,s\tilde ao~~1,-2\,e\,-5.\end{array}}$