Find a possible expression for the general term of an infinite sequence starting at 1) 1,2,3,4,5,... 2) 1,4,9,16,25,... 3) 34,27,20,13,6,... 4) 1,2,3,5,8,13,21,... 5) 3,5,11,21,43,85,... 6) 2,3,4,7,8,11,16,... 7) 3,7,15,31,63,... a) Now, discussion about the difference between find a possible expression and find the expression of the general term of the sequence. Which of those infinite sequence declared above is well defined? b) How many terms of an infinite sequence most be given in order to determine1 the sequence?