A) \[\frac{{{e}^{x}}}{(1-{{e}^{x}})\,\,\sqrt{1-{{e}^{2x}}}}\]
B) \[\frac{{{e}^{x}}}{(1-{{e}^{x}})\,\,\sqrt{1-{{e}^{x}}}}\]
C) \[2\pm 3\sqrt{15}\]
D) \[3\pm 2\sqrt{15}\]
E) None of these
Correct Answer: A
Solution :
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