differentiation

Question: $\frac{{{d}^{20}}y}{d{{x}^{20}}}(2\cos x\cos 3x)$=



1) ${{2}^{20}}(\cos 2x-{{2}^{20}}\cos 4x)$
2) ${{2}^{20}}(\cos 2x+{{2}^{20}}\cos 4x)$
3) ${{2}^{20}}(\sin 2x+{{2}^{20}}\sin 4x)$
4) ${{2}^{20}}(\sin 2x-{{2}^{20}}\sin 4x)$
Solution: Explanation: No Explanation
Differentiation by substitution Higher order derivatives

Rate this question:

Average rating: (0 votes)

Previous Question Next Question