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$\sec\left(x\right)$
Learn how to solve problems step by step online. sec x =\frac{cos x}{2\left(1+ sen x\right)}+\frac{cos x}{2\left(1- sen x\right)}. Math interpretation of the question. To derive the function \sec\left(x\right), use the method of logarithmic differentiation. First, assign the function to y, then take the natural logarithm of both sides of the equation. Apply natural logarithm to both sides of the equality. Apply logarithm properties to both sides of the equality.