If A = {1,2,3,4} B=N. Let f: A ➝ B be defined by f(x) = x² + 1then find the range of f. Note: [ sir / maam please solve my all Questions that I have posted in .]

This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?