Just came across this online tool (http://matrix.reshish.com/). Probably one of the nicest online matrix calculators that can do most stuff like calculating determinant, inverse, rank, Gauss-Jordan Elimination, etc.
Very intuitive and easy to use. Recommended to bookmark it for further use!
http://www.seab.gov.sg/oLevel/2014Syllabus/4047_2014.pdf
There are some minor changes to the A Maths Syllabus in 2014. Wishing everyone taking the new syllabus all the best!
Main Differences
Topics Added:
– knowledge of 
Topics Removed:
– Intersecting chords theorem and tangent-secant theorem for circles removed
– exclude solving simultaneous equations using inverse matrix method
