Q .     Let `f(x) = {tt{(1, AA, x < 0),(1 + sinx , AA, 0 <= x <= pi/2))`

then what is the value of `= f'(x)` at `x=0`?

BITSAT 2005
A

`1`

B

`-1`

C

`oo`

D

does not exist

0
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