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Q.

If f(a) = log (2+a2−a) for 0

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a

f(a)

b

2 f(a)

c

12f(a)

d

8 f(a)

answer is A.

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Detailed Solution

12f(8a4+a2)=12log[2+8a4+a22−8a4+a2] =12log[4+a2+4a4+a2−4a] = 12log(2+a2−a)2= log(2+a2−a)=f(a)

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