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If Log√27x = 2 (2)/(3) , Find X - Mathematics

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Question

If log√27x = 2 `(2)/(3)` , find x.

Sum

Solution

log√27x = 2 `(2)/ (3)`

∴ log√27x =  `(8)/ (3)`

∴ x = `( sqrt27 )^((8)/ (3))`  ...[ ∵ loga x = b ⇒ x = ab ]     

∴ x = `( 27^((1)/(2)))^(8/3)` 

∴ x = `( 3 ^((3)/(2)))^(8/3)`

∴ x = `3^((3/2)xx(8/3))`

∴ x = 3

∴ x = 81

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More About Logarithm
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Chapter 8: Logarithms - Exercise 8 (D) [Page 111]

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Selina Concise Mathematics [English] Class 9 ICSE
Chapter 8 Logarithms
Exercise 8 (D) | Q 21 | Page 111
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