AP Calculus ABhardmcq1 pt
Find d/dx [√(4x² + 1)].
A.4x/√(4x² + 1)
B.8x/√(4x² + 1)
C.2x/√(4x² + 1)
D.4x/(4x² + 1)
Explanation
Core Concept
Correct. Rewriting as (4x² + 1)^(1/2) and applying the chain rule: (1/2)(4x² + 1)^(-1/2) · 8x = 4x/√(4x² + 1).
Correct Answer
A4x/√(4x² + 1)
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