Primitive of Reciprocal/Corollary 2

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Corollary to Primitive of Reciprocal

$\dfrac {\d} {\d x} \ln \size x = \dfrac 1 x$

for $x \ne 0$.

Proof

Follows directly from Primitive of Reciprocal.

$\blacksquare$

Sources

• 2005: Roland E. Larson, Robert P. Hostetler and Bruce H. Edwards: Calculus (8th ed.): $\S 5.1$