Q.

If the solution set for f(x) < 3 is (0,) and the solution set for f(x) > –2 is (,5). The interval in which x lies, for the equation (f(x))2f(x)+6 is/are

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a

[5,)

b

(,)

c

(,5]

d

(,0]

answer is C, D.

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Detailed Solution

f2(x)f(x)60;(f(x)3)(f(x)+2)0

hence solution is (,0][5,).

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