Surjective (onto) and Injective (one-to-one) functions

Introduction to surjective and injective functions

Category:

Education

Tags:

• surjective
• onto
• injective
• one-to-one
• functions

[thepoet82]

Very nice, but I can't watch this in high definition.

Not being able to really makes the handwriting hard to read!

[khanacademy]

rewatch it in a few minutes. should be available in hi-def then

[benfaysal23]

Dude your videos are like the best that i'm subscribed to, Thank you very much for everything you're doing for us.

[kannugmail]

so in the last part its onto and one to one! so its bijective right??

[1982kanga]

@khanacademy thanks for that, it looks fantastic now

[Kazraka]

I swear, if it weren't for Khan, I would not have passed Calculus and now I owe him my Discrete grade too.

[meltz4ya]

omg .. you jus answered all my ''jectives'' question.. thanks alot...

[oijabez]

thanks man! now i really understand!! this is like a light in the middle of darkness!

[kev121314]

hi, you are brilliant, will you make a video on how to prove 1 to 1 and onto? :)

[zh1412]

Thanks man:)

[lizjakubowski]

@Melgazar9 "one to one" means something different than a "one-to-one correspondence", i.e. bijection

[Melgazar9]

Are u sure that if f is injective, then it is one to one? I think it is only one to one (bijective) if both cases satisfy (injective and surjective).

[PineNutButter]

Smart. Thank u so much.

[ejneboon]

Thank you for the tutorial. I understand this functions now even though english is not my first language. I couldn't understand this from the books that were written in my main language.