If and and and given that , then is equal to
- (A)5✓ Correct
- (B)10
- (C)0
- (D)15
Answer: (A)
Solution
Given and , we have .
Differentiating :
Therefore, (constant).
This means for all .
Since ,
is constant for all .
Given , we have .
Differentiating :
Therefore, (constant).
This means for all .
Since ,
is constant for all .
Given , we have .
JEE Advanced · 2006 · 09 Apr 2006 · Single correct option