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Mathematics

Prove the following:

log104 ÷ log102 = log39

Logarithms

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Answer

Given,

log104 ÷ log102 = log39

Simplifying L.H.S. we get,

⇒ log104 ÷ log102 = log1022 ÷ log102

= 2log102log102\dfrac{2\text{log}{10}2}{\text{log}{10}2}

= 2.

Simplifying R.H.S. we get,

⇒ log39 = log332

= 2log33

= 2.

Since, L.H.S. = R.H.S.

Hence, proved that log104 ÷ log102 = log39.

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