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  1. What Math Classes do Engineers (and Physics Majors) Take? (Part 3)

    What Math Classes do Engineers (and Physics Majors) Take? (Part 3)

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

    integral of x^n lnx from 0 to 1

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  5. Inner product space and p norm

    Inner product space and p norm

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  6. Probability solution: A Total of n balls, number of 1 through n...

    Probability solution: A Total of n balls, number of 1 through n...

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  7. Special quartic equation and cos72

    Special quartic equation and cos72

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

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

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  9. Linear map fixed point theorem

    Linear map fixed point theorem

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  10. What Math Classes do Engineers (and Physics Majors) Take? (Part 2)

    What Math Classes do Engineers (and Physics Majors) Take? (Part 2)

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  11. The existence proof of eigenvectors and eigenvalues

    The existence proof of eigenvectors and eigenvalues

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  12. Integral of 1/(x^3-1) from integral of 1/(x^3+1)

    Integral of 1/(x^3-1) from integral of 1/(x^3+1)

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

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

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

    Prove Method of infinite Descent : square 2 is irrational

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  18. Cantor's intersection theorem Prove

    Cantor's intersection theorem Prove

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  19. 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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  20. 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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  21. 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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  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. 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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  24. Normal subgroup and quotient subgroup

    Normal subgroup and quotient subgroup

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  25. There exist distinct integers x,y,z for which, x^2+y^2+z^2=14^n

    There exist distinct integers x,y,z for which, x^2+y^2+z^2=14^n

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