API Reference > geometry-core > CartesianGeometry > Matrix3d > inverse inverse Method return the inverse matrix. The return is undefined if the matrix is singular (has columns that are coplanar or colinear) Note that each Matrix3d object caches its own inverse, and has methods to multiply the inverse times matrices and vectors. Hence explicitly constructing this new inverse object is rarely necessary. inverse(result?: Matrix3d): undefined | Matrix3d Parameter Type Description result Matrix3d Returns - undefined | Matrix3d Defined in geometry3d/Matrix3d.ts Line 1898 Last Updated: 11 June, 2024