Q.1 (A) (iv) If ∫₀^a 3x² dx=8 then a= _____. A. 0 B. 2 C. 8 D. 4/3

Answer: (b) 2 ∫₀^a 3x²dx=[x³]₀^a=a³=8⇒ a=2.

If \(\int_0^a 3x^2\,dx=8\) then \(a=\) _____.

Q.1 (A) (iv) If \(\int_0^a 3x^2\,dx=8\) then \(a=\) _____.

A. 0

B. 2

C. 8

D. \(\frac{4}{3}\)

Doubtly Asked 29 Oct 2026 Board exam · July 2025 hsc 12th Save WhatsApp Report

Best answer

Answer: (b) 2

\(\int_0^a 3x^2dx=\left[x^3\right]_0^a=a^3=8\Rightarrow a=2\).

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

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