JEE Math Practice Question
If 2x = y$${^{{1 \over 5}}}$$ + y$${^{ - {1 \over 5}}}$$ and (x2 $$-$$ 1) $${{{d^2}y} \over {d{x^2}}}$$ + $$\lambda $$x $${{dy} \over {dx}}$$ + ky = 0, then $$\lambda $$ + k is equal to :
- A.$$-$$ 23
- B.$$-$$ 24
- C.26
- D.$$-$$ 26
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