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{:("sphere", "centre"),(I. r^(2) - 2r (3i + 4j - 5k) + 1 = 0, a.i + j + k),(II. (r - 3i + 2j - 5k). (r + i + j + 3k) = 0, b. 3i + 4j - 5k),(III. i^(1) + y^(2) + z^(2) - 6x + 2y - 4x - 1 = 0, c. 3i + 2j - 5k),(IV. (r - 3i - 2j + 5k)^(2) = 49, d. 3i - j + 2k):} |
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Answer» B,a,d,c |
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