Question

Ранг матрицы left(begin{array}{cccc}1&2&3&4\0&2&3&4\0&0&3&4\0&0&0&0end{array}right) равен ### .

Answer 1

$left(begin{array}{cccc}1&2&3&4\0&2&3&4\0&0&3&4\0&0&0&0end{array}right) sim left(begin{array}{cccc}1&2&3&4\0&2&3&4\0&0&3&4end{array}right) \\rang=3$