Question: Find the derivative of the following functions

1. \(y=3{{x}^{5}}+7{{x}^{4}}-10{{x}^{3}}-14{{x}^{2}}+3x+20\)
2. \(y={{\left( 9{{x}^{3}}+5{{x}^{2}}-7x-13 \right)}^{4}}\)
3. \(y=\frac{\cos \left( 4x \right)}{{{x}^{2}}+1}\)
4. \(y={{\tan }^{2}}\left( \cos \left( 2x \right) \right)\)
5. \(y={{\left( \sec x \right)}^{5}}\)
6. \(y=\sin \left( {{x}^{3}} \right)\left( \sqrt[5]{3{{x}^{5}}-1} \right)\)
7. \(y=\sqrt{x+\sqrt{x+\sqrt{x+5}}}\)
8. \(y=\sin \left( \sin \left( \sin {{x}^{2}} \right) \right)\)
9. \(y=|{{x}^{2}}-9|\)
10. \(y=[x]\)
11. \(y={{x}^{6}}-5{{x}^{2}}{{y}^{3}}+{{y}^{6}}+1\)

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