I need help with these calculus questions:

WeBWork 5 - Topics 10 - 12: Problem 4 (1 point) Find the following limit using I'Hopital's Rule: lim So Vt cost dt x-70+ 2 2 Answer: Enter the word "infinity" if the answer is co.WeBWork 5 - Topics 10 - 12: Problem 5 (1 point) Evaluate the integral using an appropriate substitution. x4 + 1 da = + C Vac5 + 5xWeBWorK 5 - Topics 10 - 12: Problem 6 (1 point) Determine whether the integral is divergent or convergent. If it is convergent, evaluate it. If not, state your answer as "divergent". [der 3 ($+7)3/2 l