JEE Advanced Model Paper 16 with solutions for online practice

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Question : 63 of 69
 
Marks: +1, -0
Given that
y
1
sec1 x dx = λ and for (y ≥ 1) . If
1
y
{sec1 x - tan1(x21)} dx +
y
1
{sec1 x - tan1 (x21)} dx =
π (y - a) - bλ , then a + b = ....
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