• Rodrigues' rotation formula
• Euler angle

• Inverse matrix
• Inverse matrix of a 2x2 matrix
• Inverse matrix of a 3x3 matrix
• Inverse matrix of a 4x4 matrix
• Gauss-Jordan elimination
• Transpose
• Orthogonal matrix
• Identity matrix

• Definition of Determinant
• Properties of Determinant
• Determinant 2x2
• Determinant 3x3
• Determinant 4x4
• Determinant 5x5
• "a matrix is invertible" $\Longleftrightarrow$ "its determinant is non-zero"

• Cofactor expansion

• Cofactor matrix

  Diagonalization

• How to diagonalize a 3x3 matrix

  Rank

• How to calculate the rank of a matrix

  Others

• Linear-independence/dependence and examples
• Trace
• Triangle Inequality
• Calculator of system of linear equations

• Norm of Cross Product = Parallelogram Area
• Kronecker's delta

• Gaussian integral

• Geometric Distribution
• Variance of the exponetial Distribution
• Expectation value of the exponential Distribution

• Example of Newton's method: Computing the square root of 3
• Lagrange interporation