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Question

If the function f(x) defined by f(x)=x100100+x9999+.....+x22+x+1, then f′(0)=

A
100f(0)
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B
1
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C
100
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D
None of these
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Solution

The correct option is A 1
f(x)=x99+x98+...........+x+1
f(0)=0+0+0+.......+0+1
f(0)=1

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