Mathematics · Analytical Geometry
If there are three mutually perpendicular tangent planes to the cone 2ax2 + y2 + 2z2 + 2ayz − 2zx − 6xy = 0, then the value of a is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1-4 or 2✓
- 2-2 or -4
- 32 or 4
- 43 or -4
Correct answer
-4 or 2
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