3ˣ = x⁹ | Find the Value of x | 99% Students Failed This Question 😱

Er Chandra Bhushan
0


Solution: Solve 3x = x9

Given:

3x = x9

Taking logarithm on both sides:

log(3x) = log(x9)

Using log properties:

x log 3 = 9 log x

Dividing by x:

log 3 = 9 log(x1/x)

log(x1/x) =1/9(log3) 

log(x1/x) =(log3^1/9) 

Hence,

x1/x = 31/9

Checking x = 27:

327 = (33)9 = 279

Therefore,

x = 27

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