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Q.

The domain of 1x−x2+3x−1−2x2 is

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a

[12, 1]

b

[12, 1)

c

(12, 1]

d

(12, 1)

answer is B.

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Detailed Solution

x−x2>0 and 3x−1−2x2≥0  ⇒xx-1<0 and 2x-1x-1≤0⇒x∈(0,1) and x∈[12,1]   Domain of f is [12,1)       ( intersection of both the domains )
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