(Built-in Mathematica Symbol)
Inverse[m] gives the inverse of a square matrix m.
Matrix inversion. Here is a simple 2×2 matrix. This gives the inverse of m. In producing this formula, Mathematica implicitly assumes that the determinant ad-bc is nonzero.
InverseFunctions is an option for Solve and related functions that specifies whether inverse functions should be used.
InverseSeries[s] takes the series s, and gives a series for the inverse of the function represented by s. InverseSeries[s, x] uses the variable x in the inverse series.
PseudoInverse[m] finds the pseudoinverse of a rectangular matrix.
InverseErfc[s] gives the inverse complementary error function obtained as the solution for z in s = erfc(z).
InverseBetaRegularized[s, a, b] gives the inverse of the regularized incomplete beta function.
InverseGammaRegularized[a, s] gives the inverse of the regularized incomplete gamma function.
InverseJacobiCN[v, m] gives the inverse Jacobi elliptic function cn -1 (v \[VerticalSeparator] m).