Integral of sqrt(9+x^2) using trigonometric substitution

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#integral #integration #trigsub #trigonometricsubstitution
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jesus christ, this problem was very time consuming

RustinKabiri
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i did this by hand and got the results you showed - then i checked it with my calculator and it gave a different answer - so i was right and the calculator was wrong that makes me feel good - thank you showing me that my calculations were correct

rigpa
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i think the natural log part isn’t divided by three

elliotgauvin
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By the time you switched boards was interrupted by innumerable adds have speech problems I found it very difficult to keep up even though I knew where you were going. Any student unfamiliar with this would certainly become lost in this incredibly long explanation .

cliffordmorris