Linear Maps World: Level 2 and Level 4 are duplicates

[JadAbouHawili]

Both ask you to prove T 0 = 0 for T linear map , I suggest one of them be removed.

[JadAbouHawili]

level 5 then proceeds to say
"
Just as we proved that the null space is always a subspace, we'll now prove that the range is also always a subspace.
"

I'm guessing this is what level 4 was supposed to be: proving that the null space is always a subspace

[ZRTMRH]

Thank you @JadAbouHawili , I updated level 4 to be proving that the null space is always a subspace.