Question

Find the values of the determinants |3 -1| : : |1 4|

Answer 1

hy mate here is your anshwer=>>


=>3-1|::|1+4|

=>2/5✔

is your anshwer☺

Answer 2

The value of this determinant is found by finding the difference between the diagonally down product and the diagonally up product.

D = $\left[\begin{array}{cc}m_1&m_3\\m_2&m_4\end{array}\right] = m_1*m_4 - m_2 *m_3$

here, D = $\left[\begin{array}{cc}3&-1\\1&4\end{array}\right]$

D = 3 * 4 - ( 1 ) * ( - 1)

D = 12 + 1

D = 13