Find the integral of 1/sqrt(x^2-9).

The question or problem ask to calculate and find the integral of 1/sqrt(x^2-9) and the best answer that i could give base on the given equation you give and on my further computation, the integral of the equation of ln [ tan u + secu ] + c = ln [ tan ( sec^1 (x/3) + x/3) ] + C. I hope you are satisfied with my answer and feel free to ask for more 

i think there was a typo. you wrote pat brings 3 quarts of ice-cream to the party. each serving of ice-cream is 1 6 quart. how many total servings of ice-cream does pat bring to the party? i think the bold is supposed to be 1/6. so 1 quart of ice cream = 6 servings. 6 * 3 = 18.

the answer is 18.