Determine the running time of the following algorithms. Write summations to represent loops and simplify. Show work to justify your solution. When using upper and lower bounds, be sure to justify both the upper bound and lower bound and check that the bounds differ by only a constant factor. 4. (a) Func5(n) 1 S = 0; 2 for i + 4 to na do 3 for j + 6 to 3i[logz il do 4 S + S + i - j; 5 end 6 end 7 return(s); (b) Func6(n) 1 S = 0; 2 for in to 4n2 do 3 for j + 1 to i do 4 srsti- j; 5 end 6 end 7 return (s)