What is the difference between an acronym and an acrostic? an acronym forms a word, while an acrostic forms a sentence

an acronym is a mnemonic device, while an acrostic is a form of rhyme

an acronym uses association, while an acrostic relies on rhythm

an acrostic forms a sentence, while acrostic forms a word

An acronym is an abbreviation of initial letters formed from other words and pronounce as one word.

While, an acrostic on the other hand is a poem, word puzzle, or other composition in which certain letters in each line form a word or words.

For the poem definition it's a poem in which the first letter of each line spells out a word, message or the alphabet.

So, it's "an acronym forms a word, while an acrostic forms a sentence"

The difference between an acrostic and an acronym is that an acrostic is a poem or other text in a certain letters, often the first in each line,spell out a name or message while acronym is an abbreviation formed by (usually initial) letters taken from a word or series of words, that is itself pronounced as a word, such as ram", "radar", or "scuba; sometimes contrasted with initialism.

correct answer for apex users would be /opportunities for growth/

to answer your question:

f(x)= a^x.  if x=0, f(x)=1  if x=1, f(x)=a  if x=1, f(x)=a^a