MathAnalysisCalculusDerivatives

Derivatives of trigonometric functions

A quotient

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What is a derivative of $\dfrac{\pi^2}{\cos x}$ equal to?

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\dfrac{\pi^2 \cdot \sin x}{\cos^2 x}

\dfrac{-\pi^2 \cdot \cos x}{\cos^2 x}

\dfrac{2\pi \cos x+\pi^2 \cdot \sin x}{\cos^2 x}

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