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Question

If, 3a2x(a+1);x21;x=2 is continuous at x=2, then a= _____



A
2
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B
1
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C
1
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D
0
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Solution

The correct option is B 1
If f(x) is continuous at x=2, then
putting x=2 in 3a2x(a+1) gives
3a22(a+1)=1
2a1=1
a=1

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