Q.1 (A)(ii) If y = 2x² + log 2 + 5 then dy/dx = ____. A. x B. 4x C. 2x + log 2 D. -4x

If \(y = 2x^2 + \log 2 + 5\) then \(\dfrac{dy}{dx} =\) ____.

Q.1 (A)(ii) If \(y = 2x^2 + \log 2 + 5\) then \(\dfrac{dy}{dx} =\) ____.

A. \(x\)

B. \(4x\)

C. \(2x + \log 2\)

D. \(-4x\)

Doubtly Asked 29 Oct 2026 Board exam · July 2024 hsc 12th Save WhatsApp Report

Best answer

Answer: (b) \(4x\)

\(\log 2\) and \(5\) are constants, so their derivatives are zero. \(\dfrac{dy}{dx} = 2(2x) + 0 + 0 = 4x\).

Doubtly AI · 29 Oct 2026 AI-verified · Nov 2026 Report

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