What is the value of r = 1Σn f(x) if f(r) = \(\begin{vmatrix}2r & x & n(n + 1) \\(6r^2 – 1) & y & n^2 (2n + 3) \\(4r^3
Posted: Wed Jul 13, 2022 8:07 pm
a) 1
b) -1
c) 0
d) 2
b) -1
c) 0
d) 2
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