Published by:
CGP EDU Academic Team
Published on: August 12, 2026
If x 2 + y 2 = t + 
, x 4 + y 4 = t 2 + 
, then -
Text Solution
Verified by ExpertsThe correct answer is:
D
Eliminate t , by
(x 2 + y 2 ) 2 = t 2 + 
+2 = x 4 + y 4 + 2 ⇒ 2x
2 y 2 = 2
⇒ x 2 y 2 = 1
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