1. Linear map fixed point theorem

    Linear map fixed point theorem

    43
    2
    12
  2. 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

    56
    4
    15
  3. Inner product space and p norm

    Inner product space and p norm

    35
    3
    3
  4. In triangle, tanA+tanB+tanC=tanA*tanB*tanC

    In triangle, tanA+tanB+tanC=tanA*tanB*tanC

    43
    6
    1
  5. Prove interesting trigonometric identities

    Prove interesting trigonometric identities

    40
    3
    1
  6. sin 15 and sin 18 and cos 36: Pure geometric way

    sin 15 and sin 18 and cos 36: Pure geometric way

    34
    5
    4
  7. Probability solution: A Total of n balls, number of 1 through n...

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

    40
    5
    17
  8. index 2 subgroup must be a normal subgroup

    index 2 subgroup must be a normal subgroup

    33
    4
    4
  9. Mathematical induction divide exercise

    Mathematical induction divide exercise

    38
    4
    4
  10. Prove normal matrix is unitary diagonalizable

    Prove normal matrix is unitary diagonalizable

    37
    4
    8
  11. sin(x+y)sin(x-y)=(sinx+siny)(sinx-siny)

    sin(x+y)sin(x-y)=(sinx+siny)(sinx-siny)

    52
    6
    4
  12. Complex analysis Integral of cos(ax)/coshx from 0 to infinity

    Complex analysis Integral of cos(ax)/coshx from 0 to infinity

    27
    8
    8
  13. Integral of sec(x) and Integral of 1/sec(x)

    Integral of sec(x) and Integral of 1/sec(x)

    24
    2
    14
  14. 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)

    24
    3
    21
  15. Integral of x^4+1 step by step

    Integral of x^4+1 step by step

    20
    5
    14
  16. Integral of 1/(e^x+1) and integral of 1/(e^x-1)

    Integral of 1/(e^x+1) and integral of 1/(e^x-1)

    12
    3
    18