Question

Need help..

Answer 1

For part a is it?

Answer 2

@Hero

Answer 3

I have no clue what \(signum\) is

Answer 4

But graphing it doesn't seem difficult

Answer 5

In mathematics, the sign function or signum function (from signum, Latin for "sign") is an odd mathematical function that extracts the sign of a real number. In mathematical expressions the sign function is often represented as sgn.

Answer 6

I think that maybe they mean this: