Symbolic math system, MITRE, 1964. Later version: MATHLAB 68 (PDP-6, 1967).
["The Legacy of MATHLAB 68", C. Engelman, Proc 2nd Symp on Symbolic and Algebraic Manip, ACM (Mar 1971)].
[Sammet 1969, p. 498].
Try this search on Wikipedia, OneLook, Google
Nearby terms: Mathematical Analysis without Programming « Mathematical Analyzer, Numerical Integrator and Computer « Mathematics in Recognizable Form Automatically Compiled « MATHLAB » MATH-MATIC or MATHMATIC » math-out » MathWorks