The geometrical key
Subtitle: or, The gate of equations unlock'd : a new discovery of the construction of all equations, howsoever affected, not exceeding the fourth degree; viz. of, linears, qvadratics, cvbics, biqvadratics, and the finding of all their roots, as well false, as true ... by a circle, and any (and that but one only) parabole ...
By: By Tho. Baker.
Publisher: Printed by J. Playford, for R. Clavel ...
Published: 1684
Place of publication: London
Language: eng
Number of pages: 217
Subjects: Algebra -- Graphic methods.; Parabola.
Other titles: The gate of equations unlock'd; Clavis geometrica catholica; Janua aequationum reserata; The geometry of all equations
Notes: Half title: The geometry of all equations, cubic and biquadratic, by a circle, and any one only parabole.

Latin and English; opposite pages of text numbered in duplicate.

Added t.p. in Latin: Clavis geometrica catholica, sive, Janua aequationum reserata ...

Wing B517.

"A catalogue of the mathematical works of the learned Mr. Thomas Baker ... with a proposal about printing the same ...": p. 1-7 (2nd group)