solved

[lethal juniper]

I know Im not blind it clearly is increasing at -6,3 and 3,6 but it says im wrong

[lethal juniper]

I meant -6,-3 but point still stands

[tacit tapir]

I previously heard that you shouldn't use union but use (-6,-3) and (3,6) (or commas)
I forgot the exact reason but something like:
Union would imply that function is continuously increasing at those intervals

[lethal juniper]

ok you were right I had to use comma

!solve

!solved

solved

[tacit tapir]

.solved i think

[lethal juniper]

.solved