AN

ELEMENTARY TREATISE

ON THE

GEOMETRICAL AND ALGEBRAICAL

INVESTIGATION

OF

MAXIMA AND MINIMA,

BEING THE SUBSTANCE

OF

Course of Lectures

Delivered conformably to the Will of LADY SADLER:

TO WHICH IS ADDED,

A Selection of Propositions

DEDUCIBLE FROM EUCLID'S ELEMENTS.

BY D. CRESSWELL, A. Μ.

FELLOW OF TRINITY COLLEGE, CAMBRIDGE.

Second Edition, Corrected and Enlarged.

.......--------

CAMBRIDGE:

Printed by J. Smith, Printer to the University;

FOR J. DEIGHTON & SONS;

AND LAW & WHITTAKER, AVE-MARIA-LANE, LONDON.