The tanh$ (2x) sech (2x) dx is equal to O A. None of the choices in the list. O B. tanh (2x) +C OC. -e2+e-2x sech (2x) sech5 (2x) -+C 3 10 OD. sech (2x) sech (2x) e 2x +e-2x -+C. 10 3 sech (2x) sech (2x) +C OE. 2(e2+e-2") 3 10

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