X(PLORE) IBM for DOS Book/Disk

This text examines X(PLORE) - previously called "The Calculus Calculator". It is designed for ease of use, while at the same time it incorporates the power to perform complex mathematical operations. It can evaluate mathematical expressions, graph functions, solve equations and compute integrals and derivatives - with new features such as matrix operations, huge integers and exact fractions, vector fields and trajectories, string operations, level curves and graphics zoom and unzoom.