Limits, Continuity and Differentiability Part 1

Section: Mathematics
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Question : 65 of 100
 
Marks: +1, -0
If the function
f(x){
−x,x<1
a+cos−1(x+b),1≤x≤2

is differentiable at x=1, then
a
b
is equal to:
[Main 9 Apr 2016]
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