Mathcad 14 [best]

Mathcad 14 is a version of PTC Mathcad, a technical computing software designed for engineering calculations, documentation, and analysis. Released in the mid-2000s, Mathcad 14 is often remembered for its ease of use and live, worksheet-style interface where mathematical notation, text, graphics, and results coexist on the same document.

: Unlike standard word processors, equations in Mathcad are active. If you change a variable's value, every calculation that depends on it updates automatically . mathcad 14