Invert Command

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Invert( <Matrix> )
Inverts the given matrix.
Example: Invert({{1, 2}, {3, 4}}) yields \begin{pmatrix}-2 & 1\\1.5 & -0.5\end{pmatrix}, the inverse matrix of \begin{pmatrix}1 & 2\\3 & 4\end{pmatrix}.
Note: In the Menu view cas.svg CAS View undefined variables are allowed too.
Invert({{a, b}, {c, d}}) yields \begin{pmatrix}\frac{d}{ad- bc} & \frac{-b}{ad- bc}\\\frac{-c}{ad- bc}& \frac{a}{ ad- bc}\end{pmatrix}, the inverse matrix of \begin{pmatrix}a & b\\c & d\end{pmatrix}.
Invert( <Function> )
Gives the inverse of the function.
Invert(sin(x)) yields asin(x).
The function must contain just one x and no account is taken of domain or range, for example for f(x) = x^2 or f(x) = sin(x).
If there is more than one x in the function another command might help you:
Both Invert(PartialFractions((x + 1) / (x + 2))) and Invert(CompleteSquare(x^2 + 2 x + 1)) yield the inverse functions.

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