Tuesday, 17 August 2021

Consider all 2×2 matrices whose entries are distinct and taken from the set {1,2,3,4}. The sum of determinants of all such matrices is
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Define f:R→R by \[f(x)= \begin{cases}(1-\cos x) \sin \left(\frac{1}{x}\right), & x \neq 0 \ 0, ...