Q.
The range of α for which the points (α,α+2) and 3α2,α2 lie on opposite sides of the line 2x+3y−6=0
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a
(−∞,−2)
b
(0,1)
c
(−∞,−2)∪(0,1)
d
(−∞,1)∪ (2,∞)
answer is C.
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Detailed Solution
Points lie on opposite sides of the line⇒L11L22<0⇒5α(3α+3α2−6)<0→α(α+2)(α−1)<0⇒α∈(−∞,−2)∪(0,1)
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