Math ActiveX - Version 1.1 The element calculates determinants, linear equationsystems and generates matrices. It provides additionalbasic functionality like faculty, subdeterminant andmatrix reduction calculations. Further more an event isimplemented to support a progress bar for timeintensive operations. The interface is arranged in sucha way that the return values of all functions are theresulting arrays. An interlocked call of severalfunctions of the control element, whereby the returnvalues are parameters of the superordinate function andso on, is possible.