Скачать или смотреть First year math chapter 2 exercise 2.2 questions 11,12 and 13

#singular_matrix
#non_singular_matrix
#chapter_2_matrices_determinants
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0:00 - introduction
0:18- singular matrix
6:00- find the value of lambda when determinant singular
10:53 - solve for x when determinant is equal to 9
13:48 - find x from the given determinant
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