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Showing content from http://developer.mozilla.org/en-US/docs/Web/API/DOMMatrixReadOnly/inverse below:

DOMMatrixReadOnly: inverse() method - Web APIs

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The inverse() method of the DOMMatrixReadOnly interface creates a new matrix which is the inverse of the original matrix. If the matrix cannot be inverted, the new matrix's components are all set to NaN and its is2D property is set to false. The original matrix is not changed.

To mutate the matrix as you invert it, see DOMMatrix.invertSelf().

None.

A DOMMatrix.

const matrix = new DOMMatrixReadOnly().rotate(30);
const invertedMatrix = matrix.inverse();
console.log(matrix.toString());
// output: matrix(0.866, 0.5, -0.5, 0.866, 0, 0)
console.log(invertedMatrix.toString());
// output: matrix(0.866, -0.5, 0.5, 0.866, 0, 0)

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