derivative of secx proof

Here you will learn what is the differentiation of secx and its proof by using first principle. Let’s begin – Differentiation of secx The differentiation of secx with respect to x is secx.tanx i.e. \(d\over dx\) (secx) = secx.tanx Proof Using First Principle : Let f(x) = sec x. Then, f(x + h) = sec(x …

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