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Solve the equation (1-2(2logx)^(2))/(log...

Solve the equation `(1-2(2logx)^(2))/(logx-2(logx)^(2))=1`

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Verified by Experts

The given equation can rewrite in the form
`(1-2(2logx)^(2))/(logx-2(logx)^(2))=1`
`implies(1-8(logx)^(2))/(logx-2)(logx)^(2))-1=0`
Let `logx=t`
then `(1-8t^(2))/(5-2t^(2))-1=0implies(1-8t^(2)-t+2t^(2))/(t-2t^(2))=0`
`implies(1-t-6t^(2)/((t-2t^(2))=0implies((1+2t)(1-3t))/(t(1-2t))=0`
`implies{(t=-1/2),(t=1/3):}implies{(logx=-1/2),(logx=1/3):}implies{:(x_(1)=10^(-1//2)),(x_(2)=10^(1//3)):}`
Hence `x_(1)=1/(sqrt(10))` and `x_(2)=root(3)(10)` are the roots of the original equation.
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ARIHANT MATHS-THEORY OF EQUATIONS-Exercise (Questions Asked In Previous 13 Years Exam)
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  3. Let S denote the set of all polynomials P(x) of degree lt=2 such th...

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  4. If the roots of x^2-b x+c=0 are two consecutive integers, then b^2-4c ...

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  5. If the equation a(n)x^(n)+a(n-1)x^(n-1)+..+a(1)x=0, a(1)!=0, n ge2, ha...

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  6. If both the roots of the quadratic equation x^2-2kx+k^2+k-5=0 are less...

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  7. Let aa n db be the roots of the equation x^2-10 c x-11 d=0 and those o...

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  8. Let a,b,c be the sides of a triangle. No two of them are equal and lam...

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  12. If the difference between the roots of the equation x^2+a x+1=0 is les...

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  13. Let a, b, c, p, q be the real numbers. Suppose alpha,beta are the ...

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  15. How many real solutions does the equation x^7+14 x^5+16 x^3+30 x-560=0...

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  16. Suppose the cubic x^(3)-px+q has three distinct real roots, where pgt0...

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  17. The smallest value of k, for which both the roots of the equation, x^2...

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  18. If the roots of the equation b x^2+""c x""+""a""=""0 be imaginary, ...

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  19. Q. Let p and q real number such that p!= 0,p^2!=q and p^2!=-q. if alph...

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  20. Conder the function f(x)=1+2x+3x^2+4x^3 Let the sum of all distinct ...

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  21. Let alpha and beta be the roots of x^2-6x-2=0 with alpha>beta if an=al...

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