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  2. Show e really exists in one page

    Show e really exists in one page

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  3. Permutation group (Symmetric group)

    Permutation group (Symmetric group)

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  4. Very funny math question solve x for x^x^n=n

    Very funny math question solve x for x^x^n=n

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  5. Prove Method of infinite Descent (Vieta's jumping) : (x^2+y^2+1)/xy=3

    Prove Method of infinite Descent (Vieta's jumping) : (x^2+y^2+1)/xy=3

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  7. Integral of 1/(1+x^2)^2 (substitution)

    Integral of 1/(1+x^2)^2 (substitution)

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  8. Hermitian matrix is diagonalizable and orthonormal basis

    Hermitian matrix is diagonalizable and orthonormal basis

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  9. Prove Method of infinite Descent : square 2 is irrational

    Prove Method of infinite Descent : square 2 is irrational

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  10. Linear map fixed point theorem

    Linear map fixed point theorem

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  11. The existence proof of eigenvectors and eigenvalues

    The existence proof of eigenvectors and eigenvalues

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  12. Prove Method of infinite Descent : square k is irrational if k is not square free

    Prove Method of infinite Descent : square k is irrational if k is not square free

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  13. integral of lnx ln(1-x) from 0 to 1

    integral of lnx ln(1-x) from 0 to 1

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  15. More easy mathematical induction exercise

    More easy mathematical induction exercise

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  16. Prove Method of infinite Descent : no nontrivial solutions x^2+y^2=3z^2

    Prove Method of infinite Descent : no nontrivial solutions x^2+y^2=3z^2

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  17. Plot Mcdonald Shape by function

    Plot Mcdonald Shape by function

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  18. Prove Method of infinite Descent (Vieta's jumping) : (a^2+b^2)/(ab+1) is square, imo1988

    Prove Method of infinite Descent (Vieta's jumping) : (a^2+b^2)/(ab+1) is square, imo1988

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  20. integral of x^n lnx from 0 to 1

    integral of x^n lnx from 0 to 1

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  21. Prove Method of infinite Descent (Vieta's jumping) : (4a^2-1)^2/(4ab-1) is integer, then a=b

    Prove Method of infinite Descent (Vieta's jumping) : (4a^2-1)^2/(4ab-1) is integer, then a=b

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  22. sinx+sin2x+sin3x+...+sin nx, cosx+cos2x+cos3x+cos 4 x+...+cos nx

    sinx+sin2x+sin3x+...+sin nx, cosx+cos2x+cos3x+cos 4 x+...+cos nx

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  23. Special quartic equation and cos72

    Special quartic equation and cos72

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  24. Homomorphism of ring and ideal, quotient ring

    Homomorphism of ring and ideal, quotient ring

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  25. a_{n+2}=5a_{n+1}-6a_{n} Mathematical induction

    a_{n+2}=5a_{n+1}-6a_{n} Mathematical induction

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