Q 1638291102.     `f(x) = tt { (( -1 , if , x <= 0) ,( ax + b , if , 0 < x < 1) ,( 1 , if , x >= 1))`
where `a, b` are constants.
The function is continuous everywhere.

What is the value of `a?`


NDA 2015 Paper 1 April
A

`-1`

B

`0`

C

`1`

D

`2`

0
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