An Elementary Treatise On Coordinate Geometry of Three Dimensions
An Elementary Treatise On Coordinate Geometry of Three Dimensions
Robert J T Bell
The book An Elementary Treatise On Coordinate Geometry of Three Dimensions was written by author Robert J T Bell Here you can read free online of An Elementary Treatise On Coordinate Geometry of Three Dimensions book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is An Elementary Treatise On Coordinate Geometry of Three Dimensions a good or bad book?
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- = 0. Ex. 3. The conicoids ■2z^ - 2>/z - 5zx - Gx>/ + z = 0, 4z^ - 6>/z - \Ozx + Ixj/ + 2z = have four common generators. (y = 0, z = ; 2 = 0, x=0 ; x=0, ^i/-2z = l ; ?/ = 0, 5. R-22 = l. ) Ex. 4. The conicoids z^ + di/z + 6zx - Zxy - 1 2? = 0, 4j2 - 2?/2 - Azx + 2. Iv/ + 82 = have two conimon generators and touch at all points of these generators. Ex. 5. Prove that the intersection of tlie coniccnds 22 + 22-. Y + 2=0, y'^-'2ij-x-\=^ is a quartic curve whose equations may be written . V=A*-2, ...v/ = A2+l, 2 = A-1. Ex. 6. Find the points of intersection of the plane A" -9;/- 42 = and the quartic curve which is common to the parabolic cylinders 22 + 102-y + 26 = 0, /-2j/-, r + 2 = U. Am. Two coincident at (17, 5, -7) ; (2, 2, -4) ; (82, 10, -2). Ex. 7. Prove that the conicoids 3x'2 + 42- - 4//2 - zx - 2xy - 2x + 22 = 0, ^. 2 _ yi _ 8^2 + 7^2 + 1 22.^ - 1 1 xy - 2x + 22 = touch one another at all points of the common generator x=y = z, and that their other common generators lie in the planes 2{x-yf + \Z{x-y){y-z) + \2{y-zf = 0.
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