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SkyEye FAST(讨论 | 贡献) (创建页面,内容为“{{DISPLAYTITLE:Elements of Analytical Geometry and of The Differential and Integral Calculus}} <div style="text-align: center; font-size: 2rem; font-family: serif;">'''ANALYTICAL GEOMETRY.'''</div> <h2 style="text-align: center; font-family: serif !important;">SECTION I.<br>APPLICATION OF ALGEBRA TO GEOMETRY</h2> A<span style="font-size: 0.6rem">RTICLE </span> 1. The relations of Geometrical magnitudes may be expressed by means of algebraic symbols, and the…”) |
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{{math|''Ex.1. In a right-angled triangle, having given the base and sum of the hypothenuse and perpendicular, to find the perpendicular.''}}
Let ABC represent the proposed triangle, right-angled at B. Represent the base AB by
Taking away <math>x^3</math> from each side of the equatuon, we have<div style="text-align: center;"><math>b^2=s^2-2sx</math>,</div><div style="text-align: center;"><span style="text-align: left; float: left;">or</span><math>2sx=s^2-b^2</math>;</div><div style="text-align: center;"><span style="text-align: left; float: left;">Whence</span><math>x=\frac{s^2-b^2}{2s}</math>,</div>
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