Analytic geometry, for technical schools and colleges (1897)
Lambert, Preston Albert, 1862-1925 · New York, Macmillan · leaf 214
and be-come imaginary when a is numeri-cally greater than 3. The sections of the surface madeby planes parallel to the coordinateplanes are all ellipses, the surface isclosed and limited by the faces ofthe rectangular parallelopiped whosefaces are x — ±S, y = ±2, z = ±1.From the equation it is seen… … Fig. 176. X- + 2/-^ - z^x^ + >j- + z^r/ + z^ ■ X2 + J/2 . 10x = 0. ^2:^1.
Geometry, Analytic
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
