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tatyana61 [14]
3 years ago
12

X^(logx) = 1000000x Find x.

Mathematics
1 answer:
aliina [53]3 years ago
3 0

Answer:

x = 1000 or x = 0.01

Step-by-step explanation:

We are given a logarithmic equation of x and we have to solve it for x.

Given,

x^{\log x} = 1000000x

⇒ x^{\log x} = 10^{6} \times x

Now, taking log on both sides, we get

\log x^{\log x} = \log 10^{6} \times x

⇒ \log x .\log x = \log 10^{6}  + \log x

{Since \log a^{b} = b\log a and \log ab = \log a + \log b}

⇒ (\log x)^{2} = 6 + \log x

{Since log 10 = 1}

⇒ a² = 6 + a {Where, a = log x}

⇒ a² - a - 6 = 0

⇒ (a - 3)(a + 2) = 0

⇒ a = 3 or a = -2

⇒ \log x = 3 or \log x = - 2

Now, converting logarithm to exponential form, we get,

⇒ x = 10^{3} = 1000 or x = 10^{- 2} = \frac{1}{100} = 0.01 (Answer)

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