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Numerade Educator

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Problem 26 Easy Difficulty

Prove Equation 4.

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Video Transcript

we know that if why is close on H the negative one of acts in other words, the inverse then we know that co signed each of why is acts. Therefore, we know that sign. Each of why is plus or minus square of X squared minus one. Therefore we have either why is X plus a minus the square root of X squared minus one. Therefore, taking the natural of both sides, we have co sign each. The negative one is equivalent to the natural log of X plus the square root of X squared minus one. And remember, the X has to be greater than or equal to one.