Elements of analytical geometry and the differential and integral calculus (1856)
Robinson, Horatio N. (Horatio Nelson), 1806-1867 · Cincinnati : J. Ernst · leaf 121
ct %h.Q parabola. To find the center of the circle, and the radius, we put4—4a=—11.14, (1) —85=—6.74, (2) And 4(i22—a2—52)=—9.9225. (3) From(l) a=3.78. From (2) 5=0.88. And these values of a and b substituted in (3) givejB=3.34, nearly. Take from the scale which cor-responds to AF=\, AH=a=3.78,… … CURVES AND LINES. 113 it is —1.5, and of M it is —2.7, and these are the four roots ofthe equation. Their sum is 0, as it ought to be, because the equation con-tains no third power of ?/. 2. Find the roots of the equation ?^4 _^3^3 _j_62/2_|_12y—72=0. This equation contains the third power of y,…
Geometry, Analytic · Calculus
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