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Question

If f(x)=∣∣ ∣ ∣∣a−xexlnax2a−3xe3xlnax4a−5xe5xlna1∣∣ ∣ ∣∣, then

A
f(x)f(x)=0
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B
f(x)f(x)=0
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C
f(x)+f(x)=0
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D
None of these
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Solution

The correct option is B f(x)+f(x)=0
f(x)=∣ ∣ ∣axexlnax2a3xe3xlnax4a5xe5xlna1∣ ∣ ∣=∣ ∣ ∣axelnaxx2a3xelna3xx4a5xelna5x1∣ ∣ ∣

=∣ ∣ ∣axaxx2a3xa3xx4a5xa5x1∣ ∣ ∣

Clearly f(x)=f(x)

f(x)+f(x)=0

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