यदि किसी गुणोत्तर श्रेढ़ी के pवें,qवें ,...

यदि किसी गुणोत्तर श्रेढ़ी के pवें,qवें ,rवें पद क्रमशः a,b,c हो, तो सिद्ध कीजिए कि `:`
`(q-r)log_(e ) a + (r-p) log_(e ) b + (p-q)log_(e ) c = 0 `

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