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If a = log(12)m and b = log(18)m, then p...

If `a = log_(12)m and b = log_(18)m`, then prove that `log_(3)2= (a-2b)/(b-2a)`.

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CALCUTTA BOOK HOUSE-LOGARITHM-Exercise - 7 (Long-answer type questions)
  1. Prove that : (viii) (log(a)x)/(log(ab)x) = 1+log(a)b.

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  2. If x^(2)+y^(2)=z^(2), then prove that 1/(log(z-y)x) + 1/(log(z+y)x) = ...

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  3. If a = log(12)m and b = log(18)m, then prove that log(3)2= (a-2b)/(b-2...

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  4. If x^(2)+y^(2) = 6xy, then prove that 2log(x+y) = log x + logy + 3log2...

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  5. If log((x+y)/2) = 1/3{log x + logy + log(x+y)}, then prove that (x^2)/...

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  6. If a^(2-x).b^(5x) = a^(x+3).b^(3x), then show that x log (b/a) = 1/2 l...

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  7. If (logx)/(y-z) = (logy)/(z-x) = (logz)/(x-y), then prove that (i) x...

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  8. If (log x)/(y-z) = (log y)/(z-x) = (log z)/(x-y), then prove that xyz ...

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  9. If (logx)/(ry-qz) = (log y)/(pz - rx) = (log z)/(qx - py), then prove ...

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  10. If y = a^(1/(1-log(a)x)) and z = a^(1/(1-log(a)y)), then show that x =...

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  11. If x = log(c ) b + log(b)c , y=log(a)c + log(c ) a, z=log(b)a+log(a)b,...

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  12. If a,b,c be three such positive numbers (none of them is 1) that (log(...

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  13. If x = log(2a)a, y = log(3a)2a , z = log(4a)3a, then show that xyz + 1...

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  14. If a > 0, c > 0, b = sqrt(ac), ac != 1 and N > 0, then prove that (log...

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  15. If (a(b+c-a))/(loga) = (b(c+a-b))/(logb) = (c(a+b-c))/(logc), then pro...

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  16. If log(a+b+c) = log a + log b + log c, then prove that log ((2a)/(1-...

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  17. If x+y = z, then prove that 1/(log((sqrt(z)-sqrt(y)))(x)) + 1/(log((sq...

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  18. If y = (e^(x)-e^(-x))/(e^(x)+e^(-x)) then prove that y = (e^(2x)-...

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  19. Solve : (i) x^(log(10)x)= 100x.

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  20. Solve : (ii) log(x)2log(x/16)2 = log(x/64)2.

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