This picture develops a clear understanding.
I think the best technique for memorizing is by assigning meaningfulness to things that are to be memorized.
Or in other words, relating things with a memorable story, simply, creating a story.
Do you remember yourself teaching us to memorize things easily. We had related words to a story and almost everyone in the class remembered at least 25 words among the total of 30. I still remember "Bhachyeko Haat". Haha!
Memory export Jim Kwik says that anything combined with emotion becomes a...
Aksionov used to drink a lot, was riotous, and was involved in illegal activities before his marriage
Here, f: A—>B
f(x)= (x-1)/(x+2) ; x -2
A= {-1,0,1,2,3,4}
B= {-2,1,-1/2,0,1/2,1/4,2/5}
Range = {-2,-1/2,0,1/4,1/2,2/5}
As range is not equal to codomain so the given function is not bijective.
We can make it bijective by omitting {1} from set B
