Domain and Range of a Function Given a Formula

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EXCELLENT LECTURE INDEED!!!

why no sound?

thAnks to this…now I know…this is so easy.yet when our teachr discussed it..it seem to complicated ……BIG BIG THANKSTO THIS!!!!!!

so are you bitch

Wtf when my teacher explained this I was like wtf how am I supposed to solve she made it so complicated, thx u 4 uploaded this video it was so helpful.i would rate this video ★★★★★if I was able to but I will like it.

you are the dumbest

I have my math exam tomorrow

Its 25% of my grade and currently I have a 91 on a ten point grading scale

I think after my grades are updated I’ll have a 93, but hopefully I wont fail my exam

So thanks video

Why did u start at -2 when determining the domain and range

we had this during grade 8 but I totally forgot all about it and because school just started we are reviewing past lessons. my teacher makes it really confusing and his grammar makes it a whole lot worse! thank you!! you’re a life saver

this is very helpful, thankyou!

So the domains are the inputs????? Please answer

u sound like dj vlad

Khan academy is the best place to waste time and learn a million things that you never intended to learn and likely miss the details that you were looking for to pass exams in the first place.

Sal,your voice,makes me happy😃😃

its actually +2 in the first case as

-2_(-1)= 2

How did you get all real numbers for the domain? I always get confused on that.

Thank yooou! i have an exam in 3 days and this really helped!

when obama can teach you math

Illuminati Confirmed!😁😁😡😱✡🔼

I understand why the range is all real numbers, but why is it all real numbers greater than or equal to -5

I have so much respect for you wondering how you are able to retain so much information

For the range, is it always bound to the y axis? and domain in the x axis? Or am I just imagining false information that will mislead me?

this comment section is cancer

you can write the range like [-5,+inf) and thank you

WHY THE FUCK IS THERE NOTHING ON THIS STUPID WEB THAT EXPLAINS FUNCTIONS WITH 2 VARIABLES. E.g. f(4) – e(.5) with f(x)=3x+1 & e(x)=2 over x. Anyone know? MY EXAM IS TOMORROW AND I WAS NEVER TAUGHT THAT YET ITS ON MY REVISION SHEET

how can you tell if the parabola is upward or downward just by looking at the quadratic expression?

my teacher so dumb He makes me hate math rn.

very very helpful thankyou sir 😀

I cannot thank you enough for these videos. They are extremely helpful to me. I need all the help I can get 😀