Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping

Plz explain sir the concept of approaching this type of problems:- The real number K for which the equation 2 x³ + 3 x + K = 0 has two distinct real roots in [0,1]:- 1. lies between 1 and 22. lies between 2 and 33. lies between -1 and 04. does not exist

Plz explain sir the concept of approaching this type of problems:- The real number K for which the equation 2 x³ + 3 x + K = 0 has two distinct real roots in [0,1]:- 1. lies between 1 and 22. lies between 2 and 33. lies between -1 and 04. does not exist

Grade:12th pass

1 Answers

Arun
25763 Points
3 years ago
Dear Sohan
 
Correct option will be (d)
f(x) = 2x3 + 3kf′(x) = 6x2 + 3f′(x) = 0
⇒ x2 = -1/2
Not Possible.
As condition for two distinct real root is f(α) f(β) = 0
(where α, β are roots of f '(x) = 0 )
 
Regards
Arun (askIITians forum expert)

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free