Question: Evaluate x 2 9 dx in two ways: using trigonometric substitution and using hyperbolic substitution. Then use Exercise 31 to verify that the
Evaluate ∫ √x2 − 9 dx in two ways: using trigonometric substitution and using hyperbolic substitution. Then use Exercise 31 to verify that the two answers agree.
Data From Exercise 31

Verify the formulas sinh-1 x = ln|x + Vx2 +1| cosh x = ln x + x 1| - (for x 1)
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