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प्रश्न
Solve for x, if : logx49 - logx7 + logx `1/343` + 2 = 0
उत्तर
logx49 - logx7 + logx `1/343` = - 2
⇒ logx`49/[7 xx 343]` = - 2
⇒ logx`1/49` = - 2
⇒ - logx 49 = - 2
⇒ logx49 = 2
⇒ 49 = x2 ...[Removing logarithm]
∴ x = 7.
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