Derivative of Secant of a x
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Corollary to Derivative of Secant Function
- $\map {\dfrac \d {\d x} } {\sec a x} = a \sec a x \tan a x$
Proof
\(\ds \map {\dfrac \d {\d x} } {\sec x}\) | \(=\) | \(\ds \sec x \tan x\) | Derivative of $\sec x$ | |||||||||||
\(\ds \leadsto \ \ \) | \(\ds \map {\dfrac \d {\d x} } {\sec a x}\) | \(=\) | \(\ds a \sec a x \tan a x\) | Derivative of Function of Constant Multiple |
$\blacksquare$