The real number K for which the equation is, 2x3 + 3x + k = 0 has Two distinct real roots in {0,1}

Answer from the following options – (a) lies between 1 and 2 (b) lies between 2 and 3 (c) lies between -1 and 0 (d) does not exist

12 उत्तर

If I remember correctly then this is a question of jee main 2013. As the others have answered the correct option is (d)
- Achint
- 16 अप्रैल
- 0 टिप्पणी
0
D
- Suraj
- 03 अप्रैल
- 0 टिप्पणी
0
As the graph of this function is increasing function so it can never cut x axis as as a result no roots are possible so answer is d
- Ravi
- 06 मार्च
- 0 टिप्पणी
0
D
- Nitesh
- 13 फरवरी
- 0 टिप्पणी
0
d
- Swatantr
- 05 फरवरी
- 0 टिप्पणी
0
D
- Zunaid
- 24 अक्तूबर
- 0 टिप्पणी
0
As it is strictly increasing function ,no value of k exists .so and is (d)
- Sanjay
- 04 अगस्त
- 0 टिप्पणी
0
to goo kha
- Salman
- 29 जून
- 0 टिप्पणी
0
The answer's d br /
- Sai
- 08 दिसम्बर
- 0 टिप्पणी
0
ans. is d because if the roots are real then the parabola cuts the roots
- Ujjwal
- 23 नवम्बर
- 0 टिप्पणी
0
is it x^3 or 2*x*3
- Aryan
- 31 अक्तूबर
- 0 टिप्पणी
1
Correct option will be (d)br /emf/em(emx/em) = 2emx/em3 + 3emx /em+ emkf/em′(emx/em) = 6emx/em2 + 3emf/em′(emx/em) = 0br / ⇒ emx2 = -1/2/embr / Not Possible.br / As condition for two distinct real root is f(α) f(β) = 0br / (where α, β are roots of f '(x) = 0 )
- Heena
- 08 अप्रैल
- 0 टिप्पणी
5

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