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How do you find the determinant of #((1, 2), (1, 3))#?

1 Answer

Oct 31, 2016

# |(1,2),(1,3)| = 1 #

Explanation:

If we have a matrix #A = ((a,b),(c,d))#, then the determinant of #A# denoted #det(A)# or #|A|# is calculated as:
# |A| = det(A) = a * d - b*c #

# :. |(1,2),(1,3)| = (1)(3) - (2)(1) #
# :. |(1,2),(1,3)| = 3 - 2 #
# :. |(1,2),(1,3)| = 1 #

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