plotting f'(x) on a graph, then finding the y value at a point x, is what the description is saying.

In many countries, and in higher mathematics, this is standard terminology.
It is missing a comma, at worst:
'and a point to evaluate the equation_,_ as an integer.'

Go check out wolfram math world.

Yes, you can't compare arrays like that.

Ok. The profanity filter has been requested, but it was rejected: https://github.com/Codewars/codewars.com/issues/1474

Also, profanity words aren't really abuse. You don't report that, you might filter it though. Something like the links I mentioned above are something better to report.

This website is full of profanity stuff, unfortunately :/

I agree with you, but it's just that a lot of people don't care about cuss words.

It doesn't have to be a new user, I've seen power users do it too.

Yes, a report function would be useful though. Did you see the links I mentioned?

Because the function never reaches that point, it's exiting when you try to compare two arrays like that.

[1,2] !== [1,2] // true

A more useful example of a report function would be something like this:
https://www.codewars.com/kata/reviews/59b795b5335adec4b6000a2a/groups/5be209cd3ae6a7d464002fcb#5d2c7f5e14a6ef002210f1e5
or https://github.com/Codewars/codewars.com/issues/1198

I'll play the devil's advocate here, but he's complaining about why was his kata retired and this one didn't. They're not exactly duplicates and this one is a little more complex imho.

This kata was made a year before you joined the site, so it's not a duplicate of yours.

On the kata descrption page you can scroll down and see when it was created.

But, this one looks a bit different than yours. Usually those PUs will notice a duplicate fast.

Plus, it's been here for a couple years and no downvotes. Really? Except it's not approved.

Okay, but it says '100% of 4' which means 4 people voted and all were a "very".

It's not retired, what looks suspicious?

And where in your code do you use firstAttacker?

This is an approved kata... Stop spamming issues, you clearly don't understand what you're doing.

Okay, then please add the 'performance' tag.