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CUET · MATHS · PYQ PAPER 2025

Match List-I with List-II
List-I (Function f(x))List-II (Interval)
(A) \(f(x)=x|x|\)(I) Decreases on \((0, \infty)\)
(B) \(f(x)=x^2+2 x-5\)(II) Increases on \((3, \infty)\)
(C) \(f(x)=x^2-6 x+9\)(III) Decreases on \((-\infty,-1)\)
(D) \(f(x)=-x^2\)(IV) Increases on \((-\infty, \infty)\)
Choose the correct answer from the options given below:

  1. A (A) - (II), (B) - (III), (C) -(IV), (D) - (I)
  2. B (A) - (IV), (B) - (III), (C) -(II), (D) - (I)
  3. C (A) - (II), (B) - (IV), (C) -(III), (D) - (I)
  4. D (A) (II), (B) - (III), (C) -(I), (D) - (IV)
Verified Solution

Answer & Solution

Correct Answer

(B) (A) - (IV), (B) - (III), (C) -(II), (D) - (I)

Step-by-step Solution

Detailed explanation

(A) \(f(x)=x|x|\) \(f(x) = x^2\) for \(x \ge 0\), \(f(x) = -x^2\) for \(x \(f'(x) = 2x\) for \(x \ge 0\), \(f'(x) = -2x\) for \(x \(f'(x) \ge 0\) for all \(x\). Increases on \((-\infty, \infty)\). Match: (IV) (B) \(f(x)=x^2+2x-5\) \(f'(x) = 2x+2\) \(f'(x) (C)…