For the second, you have O (lg (nΒ²)) = O (2lg (n)) = O (lg (n)).
For the first you have O (nlg (n) + n ^ (1.01)) = O (n (log (n) + n ^ (0.01)), you must decide that log (n) or n ^ (0,01 ) is growing more.
n ^ 0,01 - lg (n) , n β : 0,01/x ^ (0,99) - 1/; ^ 0,99, , , ^ 0,01 , log (n), O (n ^ 1,01).