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- MyRankLv 68 months ago
f(x) = x²log (4x + 2)

f’(x) = 2xlog (4x + 2) + x² 1/ (4x + 2) d/dx (4x + 2)= 2x log (4x + 2) + x² 1/ (4x + 2) (4) (∵ (log(x))’ = 1/x, (uv)’ = u’v + uv’).

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