Woods, Frederick S. (Frederick Shenstone), 1864-, Bailey, Frederick H. (Frederick Harold), 1865- · Boston, New York [etc.] Ginn and Company · leaf 105
ce But yx = M1PV a + xx = AO + OM1 = AMV a-x1 = OA -OMx = MXA,y2 — M2P2, a + x2 = AM2, a — x2 = M2A. Hence the proposition is proved. Ex. 2. If MlPl is the ordinate of apoint Pt of the parabola y2 = <±px, anda straight line drawn through the middlepoint of M1P1 parallel to the axis of xcuts the… … F y^^ 7^ 0 I f. Vi Since Q is on the parabola, itsis found by placing y = ^ in if- = 4 px. Then Q is Fig. 84 \l6p 2/ and\Wp H/ M is (xv 0), which is the same as (-p-> 0 ). Hence the equation of MM is, by § 30, ^P I 8^ + 3^-2^ = 0. The intercept of this line on OFis § yx = ^MlPv which was to be…
Geometry, Analytic · Calculus
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