We show, step-by-step, how to find the kernel, nullity, range and rank of a linear transformation.
You can find the written version of this post at
https://dralb.com/2019/08/02/kernel-and-range/
More Linear Algebra help can be found at
https://www.youtube.com/playlist?list=PLC9FwwSK8YlFA7raFGHXm8EVKM0lwzjGM