Mat2: a: number b: number c: number d: number mul(other: Mat2 ): Mat2 transform(point: Vec2 ): Vec2 inverse(): Mat2 transpose(): Mat2 eigenvalues(): number[] eigenvectors(e1: number , e2: number ): number[][] det(): number trace(): number rotation(radians: number ): Mat2 scale(x: number , y: number ): Mat2