Q.

The real number k for which the equation, 2x3+3x+k=0 has two distinct real roots in [0,1]

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a

lies between 1 and 2

b

Lies between 2 and 3

c

lies between -1 and 0

d

Does not exist

answer is D.

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Detailed Solution

clearly f′(x)=6x2+3>0,f(x) is increasing function f(x)=0 will have no  real roots in [0,1]
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