Question

$\displaystyle\sf If\:\:x,y,z\:\:\:are\:\:\:10^{th},13^{th},\:\:and\:\:15^{th}\:\:terms$ of a GP then find

$\rm \Delta = \left|\begin{array}{ccc}\sf log\:x&\sf 10&\sf 1\\\sf log\:y&\sf 13&\sf 1\\\sf log\:z&\sf 15&\sf 1\end{array}\right|$​

Answer 1

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