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17.02.2022 •
Mathematics
Calculate 30% of 45 rounded to 2 decimal places.
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Ответ:
look it up
Step-by-step explanation: look it up or ask a friend
Ответ:
Determinant are special number that can only be defined for square matrices.
Step-by-step explanation:
Determinant are particularly important for analysis. The inverse of a matrix exist, if the determinant is not equal to zero.
How to find determinant
For a 2×2 matrix
For a 3×3 matrix
we first decompose it to 2×2
Example
Find the values of λ for which the determinant is zero
Equating the determinant to zero
s =
* (1 ±5 )
s = 1.61 or -0.61