CUET Mathematics - If a function f(x)=x^2+b x+1 is increasing in the interval [1,2], then the least value of b is : | PYQs + Solutions

CUET Mathematics

Calculus

Easy

common

$5$

$0$

$-2$

$-4$

✅ Correct Option: 3

Related questions:

22 May Shift 1

Match List-I with List-II

List-I	List-II
Function	Increasing on the interval
(A) $f(x) = -x^2 - 2x + 1$	(I) $(-\infty, -1)$
(B) $f(x) = x^2 + 1$	(II) $(1, \infty)$
(C) $f(x) = x^2 - 2x + 3$	(III) $(-\infty, 0)$
(D) $f(x) = -x^2$	(IV) $(0, \infty)$

Choose the correct answer from the options given below:

19 May Shift 1

If a revenue function is given by $R(x) = 2027x - 1013x^2 - 675x^3$ , then the marginal revenue function (MR) is:

26 May Shift 2

The volume of spherical balloon is increasing at the rate of $4 \text{ cm}^3/ \text{sec}$ . The rate of increase of its surface area, when the radius is 3cm will be :-

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