docs: function() {
        var determinant;
        determinant = this.a * this.d - this.b * this.c;
        return Matrix(this.d / determinant, -this.b / determinant, -this.c / determinant, this.a / determinant, (this.c * this.ty - this.d * this.tx) / determinant, (this.b * this.tx - this.a * this.ty) / determinant);
      }