The h$(2x) sech (2x) dx is equal to sech (2x) sech (2x) +C. A. 1 3 10 B. None of the choices in the list. C. tanh°(2x) +C sech3(2x) sech (2x) +C D. 2(e2+e-24) 3 10 sech3(2x) sech$ (2x) +C E. 3 10

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A:

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A: Find the limit

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A: I=∫dxx9x2+49x2+4=t9x  dx9x2+4=dtdx=9x2+49x dtI=∫19x2 duI=∫1u2-4 duI=∫1(u-2)(u+2)…

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A: Given problem:-

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