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Q.

 if   fx=sina+1x+sinxx, if x<0x+bx212bx32,if x>0  and  ⨍ 0=c is continuous at x=0 then 

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a

a=-32, c=12, b0

b

a=b=12, c=0

c

a=b=c=12

d

a=12, b0 c=1

answer is A.

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Detailed Solution

fx=sina+1x+sinxx  if x<0x+bx212bx32if x>0c  if x=0 is continuous at x=0

LHL=RHL=f(o)

limx0- fx=limx0+fx=f0

limx0- sin a+1x+sinxx=limx0+x+bx212-x12bx32=c

limx0- sin a+1xx+sinxx=limx0+1+b 212-1bx=c

a+1+1=limx0+ 1+bx-1bx×11+bx+1=c 

a+2=12=c

a=-32, c=12, b0

Option (1) is correct

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