Hello can someone please provide easy to read solutions for the following problems

6. [-/1 Points] DETAILS BERRAPCALC7 6.1.049. Derive the formula by using integration by parts on the left-hand side. (Assume n > 0.) xnex dx = xnex - n/ xn - lex dx U = dv = dx du = dx V = Need Help? Read It Submit Answer7. [-/1 Points] DETAILS BERRAPCALC7 6.1.053. MY NOTES PRACTICE ANOTHER If a company's marginal revenue function is MR(x) = xe-*/8, find the revenue function. [Hint: Evaluate the constant C so that revenue is 0 at x = 0.] R(X ) = Need Help? Read It Submit Answer 8. [-/1 Points] DETAILS BERRAPCALC7 6.1.071. MY NOTES PRACTICE ANOTHER According to the guidelines in the text, what is the correct choice for u in the following integral? (Do not carry out the solution, just state what u should be.) x5 In (x) dx U= Need Help? Read It Watch It Submit