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Summation by Sigma Method

If the equati...

Question

If the equation $2 x^{3} + 3 x^{2} - 12 x + d = 0$ has 3 real and distinct roots, then $d$ belongs to

(- \infty, - 7) \cup (20, \infty)

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(- 20, 7)

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(- \infty, - 20) \cup (7, \infty)

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(20, 7)

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Solution

The correct option is B $(- 20, 7)$

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Similar questions

α

2 x^{3} - 3 x^{2} - 12 x + α = 0

f (x) {(f^{''} (x))}^{2} + f (x) f^{'} (x) f^{'''} (x) + {(f^{'} (x))}^{2} f^{''} (x) = 0

f (x) = 0

f (x) = 0

f^{'} (x) = 0

2 x^{3} + 3 x + k = 0

x^{3} - 3 x + a = 0

x^{2} - m x - 4 x + 1 = 0

m

(- \infty, - 6)

(- \infty, - 3)

(- 2, \infty)

(2, \infty)

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