જો $\frac{\log x}{b - c} = \frac{\log y}{c - a} = \frac{\log z}{a - b}$ હોય,તો નીચેનામાંથી કયું સાચું છે?

  • A
    $xyz = 1$
  • B
    $x^a y^b z^c = 1$
  • C
    $x^{b + c} y^{c + a} z^{a + b} = 1$
  • D
    આપેલ તમામ

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જો ${a^x} = {(x + y + z)^y}$,${a^y} = {(x + y + z)^z}$,અને ${a^z} = {(x + y + z)^x}$ હોય,તો:

${81^{(1/{\log_5}3)}} + {27^{\log_9 36}} + {3^{4/{\log_7}9}}$ ની કિંમત શોધો.

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જો $x = \frac{\sqrt{5} + \sqrt{2}}{\sqrt{5} - \sqrt{2}}$ અને $y = \frac{\sqrt{5} - \sqrt{2}}{\sqrt{5} + \sqrt{2}}$ હોય,તો $3x^2 + 4xy - 3y^2$ ની કિંમત શોધો.

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ધારો કે $p = 99$ અને $q = 101$. $p_1 = \log_{10} \left(\frac{p+q}{2}\right)$ અને $q_1 = \frac{1}{2}(\log_{10} p + \log_{10} q)$,અને $p_2 = \log_{10} \left(\frac{p_1+q_1}{2}\right)$,$q_2 = \frac{1}{2}(\log_{10} p_1 + \log_{10} q_1)$ વ્યાખ્યાયિત કરો. તો:

$0.4\overline{23} = ?$

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