Like, they shoulda had this action back in '59. It's a good bet that you know more about this stuff than I do.
EQUATIONSOLVER 1, EQUATIONSOLVER 2
SIMUTANEOUS EQUATION SOLVER
QUADRATIC SOLVER
THIRD DEGREE EQUATION SOLVER
MATRIX EQUATIONS
X,Y & MORE
VECTORS
GRAPHS, PRIMES, DETERMINANTS: If you get this than you're better than I am