11. The equation of a sphere with center at (-3, 2, 4) and of radius 6 units is? a. x² + y² + z² +6x-4y - 8z = 36 b. x² + y² + z² +6x-4y - 8z = 7 c. x² + y² + z² +6x - 4y + 8z = 6 d x² + y² + z² +6x-4y + 8z = 36 12. What are the x and y coordinates of the focus of the conic section described by the following equation? (Angle e corresponds to a right triangle with adjacent side x, opposite side y and the hypotenuse r.) r sin2 8= cos 8 a. (1/4, 0) b. (0, TT/2) c. (0, 0) d (-1/2, 0)
11. The equation of a sphere with center at (-3, 2, 4) and of radius 6 units is? a. x² + y² + z² +6x-4y - 8z = 36 b. x² + y² + z² +6x-4y - 8z = 7 c. x² + y² + z² +6x - 4y + 8z = 6 d x² + y² + z² +6x-4y + 8z = 36 12. What are the x and y coordinates of the focus of the conic section described by the following equation? (Angle e corresponds to a right triangle with adjacent side x, opposite side y and the hypotenuse r.) r sin2 8= cos 8 a. (1/4, 0) b. (0, TT/2) c. (0, 0) d (-1/2, 0)
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:INSTRUCTIONS:
• Please write clearly and understandable way.
• Write all the corresponding Given before solving.
• Draw/Illustrate the diagram/circuit or drawings that is related to
the problem, IF POSSIBLE, which is HIGHLY REQUIRED.
• Solve in step-by-step, no shortcut, with formulas before
solutions together with the units
• Underline twice the Final Answer.
PROBLEM:
11. The equation of a sphere with center at (-3, 2, 4) and of radius
6 units is?
a. x² + y² + z² +6x-4y - 8z = 36
b. x² + y² + z² +6x-4y - 8z = 7
c. x² + y² + z² +6x - 4y + 8z = 6
d x² + y² + z² +6x-4y + 8z = 36
12. What are the x and y coordinates of the focus of the conic
section described by the following equation? (Angle e
corresponds to a right triangle with adjacent side x, opposite side
y and the hypotenuse r.) r sin2 8= cos 8
a. (1/4, 0)
b. (0, TT/2)
c. (0, 0)
d. (-1/2, 0)
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