Question

Fie matricea... Adevarat sau Fals?

Answer 1

Răspuns:

fals

Explicație pas cu pas:

A×B = 0 -1

2 3

B×A = 1 -2

3 -4

Answer 2

$\left(\begin{array}{ccc}-1&0\\1&2\\\end{array}\right) \times \left(\begin{array}{ccc}0&1\\-1&2\\\end{array}\right)=\left(\begin{array}{ccc}0&-1\\-2&5\\\end{array}\right)\\\\\left(\begin{array}{ccc}0&1\\-1&2\\\end{array}\right)\times \left(\begin{array}{ccc}-1&0\\1&2\\\end{array}\right) =\left(\begin{array}{ccc}1&2\\3&4\\\end{array}\right)$

AB≠BA

deci Fals