Partial function

Alright kiddo, have you ever played a game where you have to put a round peg in a round hole and a square peg in a square hole? That's kind of like what a partial function is.

A partial function is when there is a certain rule or instruction that only works for some things and not others. It's like saying "I can only help you if you're wearing red shoes, but if you're wearing blue shoes, I can't help you."

So imagine we have a special calculator that adds 5 to any number you put in, but it only works for numbers that are smaller than 10. If you try to put in a larger number, the calculator says "sorry, I can't help you with that."

That's an example of a partial function. It's only able to do its job for certain inputs, but not all of them. Just like how the round peg only fits in the round hole, the calculator only works for certain numbers.

I hope that helps you understand what a partial function is!