differentiation

Question: $\frac{{{d}^{n}}}{d{{x}^{n}}}({{e}^{2x}}+{{e}^{-2x}})=$

1) ${{e}^{2x}}+{{(-1)}^{n}}{{e}^{-2x}}$

2) ${{2}^{n}}({{e}^{2x}}-{{e}^{-2x}})$

3) ${{2}^{n}}[{{e}^{2x}}+{{(-1)}^{n}}{{e}^{-2x}}]$

4) None of these

Solution:

Explanation: No Explanation

Differentiation by substitution Higher order derivatives

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