THIS book contains, as its text, the first nine chapters of Prof. Bell's well-known “Treatise on Coordinate Geometry of Three Dimensions”. It therefore leads up to and completes the treatment of the ...

THE substance of this volume has formed the material of a course of lectures delivered for some years past to undergraduates in Glasgow. Its object is to provide the student, whose bent is towards ...

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The NCERT books are widely prescribed as the main study resource in schools across India. Their coherent and comprehensible language makes them the ideal learning material for most students. The NCERT ...

Horizontal lines run left to right, parallel to the horizon, with slope 0 and equation y = k. Vertical lines run top to bottom, perpendicular to the horizon, with undefined slope and equation x = k.