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Qn #1409
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If $A=\begin{bmatrix} a &b &c \\ b & c & a\\ c& a &b \end{bmatrix}$ , where $a, b, c$ are real positive numbers such that $abc = 1$ and $A^{T}A=I$ then the equation that
not
holds true among the following is
A.
$$a+b+c=1$$
B.
$$a^{2}+b^{2}+c^{2}=1$$
C.
$$ab+bc+ca=0$$
D.
$$a^{3}+b^{3}+c^{3}=4$$
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❓ Question: If $A=\begin{bmatrix} a &b &c \\ b & c... | TANCET Group Studies | Tancet Group Studies