Question

For all second degree polynomials with y = ax2 + bx + k, it is seen that the Rolles' point is at c =
0. Also the value of k is zero. Then what is the value of b?
(a) 0
(b) 1
(c) 2
(d) 3​

Answer 1

Answer:

For all second degree polynomials with y = ax2 + bx + k, it is seen that the Rolles' point is at c =

0. Also the value of k is zero. Then what is the value of b?

(a) 0

(b) 1

(c) 2

Answer 2

Answer: (a) 0

Step-by-step explanation:

Given : $y = ax^{2} + bx + k$

k = 0 [given]

⇒ $y = ax^{2} + bx$

⇒ $\frac{dy}{dx} = 2ax + b$

Equating the derivative to 0:

⇒ 2a(0) + b = 0

∴ b = 0

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