Question

is it advisable to lift up paper quickly by holding their arms or legs in an accident aspects related to spinal cord are to be taken care of while attending injured person

Answer 1

Answer:

Solution: By eliminating the row and column of an element, the determinant of remaining elements is the minor of the element, i.e. M i × j {{M}_{i\times j}} Mi×j and by using formula ( − 1 ) i + j M i × j {{\left( -1 \right)}^{i+j}}{{M}_{i\times j}} (−1)i+jMi×j we will get the cofactor of the element.