\left| \begin{array} { l l } { 3,5 } \\ { 2,8 } \end{array} \right|
Evaluate
14
Factor
2\times 7
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det(\left(\begin{matrix}3&5\\2&8\end{matrix}\right))
Find the determinant of the matrix.
3\times 8-5\times 2
For the 2\times 2 matrix \left(\begin{matrix}a&b\\c&d\end{matrix}\right), the determinant is ad-bc.
24-5\times 2
Multiply 3 times 8.
24-10
Multiply 5 times 2.
14
Subtract 10 from 24.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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