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aivan3 [116]
2 years ago
13

I FREAKING NEED HELPPP!!!

Mathematics
1 answer:
Ratling [72]2 years ago
5 0

Answer:

\boxed{\begin{bmatrix}  3 &  - 1 \\  - 3 & 4\end{bmatrix}  = 12 - 3 =  \boxed{9} }\\ \\  \boxed{\begin{bmatrix}   -12 &  - 1 \\  12 &  5\end{bmatrix}  =  - 60-  ( - 12) =  \boxed{ - 48}} \\  \\ \boxed{\begin{bmatrix}  0&  - 1 \\  17 & 4\end{bmatrix}  = 0 -( - 17 )=  \boxed{17}} \\  \\\boxed{ \begin{bmatrix}  8&  - 1 \\  -  4 &  - 1\end{bmatrix}  =  - 8 - 4 =  \boxed{ - 12} }\\  \\ \boxed{\begin{bmatrix}  2 &  - 1 \\  2 &  - 1\end{bmatrix}  =  - 2 - ( - 2) =  \boxed{0}} \\  \\ \boxed{ \begin{bmatrix}  1 &  0\\  0 &1\end{bmatrix}  = 1 - 0 =  \boxed{1}}

Step-by-step explanation:

the \: determinant \: of  \: a \: matrix : A  \to\\If  \: A  =\begin{bmatrix}  x & y \\ a & b \end{bmatrix} \: then : \\  its \: determinant \: is \: givn \: by \to \\  |A|  =  (b \times x) - (a \times y) \\  \boxed{|A|  = bx - ax}

♨Rage♨

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