Thursday, October 11, 2012

Find x if (x^1/3)^(logx x^2 +2)=2log3 27

(x^1/3)&(logx x^2 +2) = 2log3
27


We will use logarithm and exponent properties tp
solve.


First, we know that x^a^b =
x^ab


==> x^(1/3)*(logx x^2 + 2) = 2log3
3^3


Now we know that log x^a = alog
x


==> x^(1/3)*(2logx x + 2) = 2*3log3
3


But we know that logx x = 1 and log3 3 =
1


==> x^(1/3)*(2+2) =
6*1


==> x^4/3 = 6


Now
we will raise to the power 3/4


==> x =
6^3/4

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