The product rule for $\dfrac{d}{dx}(uv)$ is:
A$u v' - u' v$
B$u' v + u v'$
C$u' + v'$
D$u' v'$
Answer & Solution
Correct answer: B. $u' v + u v'$
Product rule: $(uv)' = u'v + uv'$. Add the two terms (don't multiply!).
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