ﬁnd the best big-O function for the function. Choose your answer from among the following: $\text { 1, } \log _ { 2 } n , n , n \log _ { 2 } n , n ^ { 2 } , n ^ { 3 } , \ldots , 2 ^ { n } , n !$
-$$f ( n ) = 1 + 4 + 7 + \cdots + ( 3 n + 1 )$$

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The Answer of ﬁnd the best big-O function for the function. Choose your answer from among the following: $\text { 1, } \log _ { 2 } n , n , n \log _ { 2 } n , n ^ { 2 } , n ^ { 3 } , \ldots , 2 ^ { n } , n !$
-$$f ( n ) = 1 + 4 + 7 + \cdots + ( 3 n + 1 )$$

ﬁNd the Best Big-O Function for the Function 1, log⁡2n,n,nlog⁡2n,n2,n3,…,2n,n!\text { 1, } \log _ { 2 } n , n , n \log _ { 2 } n , n ^ { 2 } , n ^ { 3 } , \ldots , 2 ^ { n } , n ! 1, log2​n,n,nlog2​n,n2,n3,…,2n,n!

ﬁNd the Best Big-O Function for the Function $\text { 1, } \log _ { 2 } n , n , n \log _ { 2 } n , n ^ { 2 } , n ^ { 3 } , \ldots , 2 ^ { n } , n !$