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CUET · MATHS · PYQ PAPER 2023

Match List - I with List - II.
LIST-I ((Function)y)LIST-II (\((\) Derivative \() \frac{d y}{d x}\))
(A) \(y=\cos \sqrt{x}\)(I) \(\frac{\sec (\tan \sqrt{x}) \tan (\tan \sqrt{x}) \sec ^2 \sqrt{x}}{2 \sqrt{x}}\)
(B) \(y=\sqrt{\sin x}\)(II) \(-3 x^2 \cos \left(x^3\right) \sin \left(\sin \left(x^3\right)\right)\)
(C) \(y=\sec (\tan \sqrt{x})\)(III) \(\frac{\cos x}{2 \sqrt{\sin x}}\)
(D) \(y=\cos \left(\sin \left(x^3\right)\right)\)(IV) \(-\frac{1}{2 \sqrt{x}} \sin \sqrt{x}\)
Choose the correct answer from the options given below:

  1. A \((A)-(I),(B)-(I V),(C)-(I I),(D)-(I I I)\)
  2. B \((A)-(I V),(B)-(I I I),(C)-(I),(D)-(I I)\)
  3. C \((A)-(I I I),(B)-(I I),(C)-(I V),(D)-(I)\)
  4. D \((A)-(I I),(B)-(I),(C)-(I I I),(D)-(I V)\)
Verified Solution

Answer & Solution

Correct Answer

(B) \((A)-(I V),(B)-(I I I),(C)-(I),(D)-(I I)\)

Step-by-step Solution

Detailed explanation

(A) \(y=\cos \sqrt{x}\) \(\frac{dy}{dx} = -\sin(\sqrt{x}) \cdot \frac{d}{dx}(\sqrt{x})\) \(\frac{dy}{dx} = -\sin(\sqrt{x}) \cdot \frac{1}{2\sqrt{x}} = -\frac{1}{2\sqrt{x}} \sin \sqrt{x}\) (A) matches (IV). (B) \(y=\sqrt{\sin x}\)…