Introduction to increasing, decreasing, positive or negative intervals | Algebra I | Khan Academy

Sal discusses there Intervals where function is increasing, decreasing, postive or negative and their graphical representation.
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[@SanKosar2005]

Dont forget Brian Mcloggan

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[@moonsliced]

water, earth, fire, air the four elements of not failing all your classes

[@thepotatoqueen4290]

Isn't it fun when you try and undrestand/explain something in your own words but your math teacher says your wrong so you find a video to explain it and all the video does is say what you said.

[@heyitsbella1734]

Nice

[@SmokeyYawn]

My teacher is like, you’ll ONLY follow how I did. Other methods are wrong and you’ll get 0

[@aleezehfaisal8280]

I support the teacher

[@dakshbadal7522]

I love the episodes where he uses 4 different colours on the same page. It just sparks a joy in my heart that I cannot explain.

[@JP-xm3qf]

This is why I really hate those stupid books, I'm doing Alan Weinstein Calculus 1 and its terrible written, making something so simple that you can learn in 5 min, as if it was some complicated hieroglyphics. Thank you Sal for making this world a better place.

[@JP-xm3qf]

Indeed, videos are superior and more efficient ways of absorbing knowledge, there is no comparison.

[@theasianfeggets5062]

I would be ahead of my class if I understood this :,)

[@vibecheck4588]

do you understand it now that it is three years later

[@madalynn4750]

Vibe check probably not😅

[@theasianfeggets5062]

@@vibecheck4588 yes. I'm in calculus now

[@chriscatt2576]

Vibe check lmao

[@leanajane8956]

@@vibecheck4588 it's 4 years now 😩

[@chloeclevenger3]

These videos are great. refreshers for finals!

[@ameliakeating1206]

using different colours and doing it along with you helped so much

[@azrabanu641]

OMG! I finally got the right video !! Your way of explanation is far better than any other tutors! Thank you!

[@ajourneytoabeautifulparadi2026]

Great video!!

[@whatsupwithtorii]

khan acadamey always explains things soo much harder

[@azrabanu641]

not rlly tbh. well i guess sometimes...but u do get this one right? i mean, in this video, he explained it very well :)

[@mysticalmind5115]

my teacher is terrible at teaching so I better get used to looking for lessons online:’)

[@animosity3771]

TYSM! I was really confused by what it was asking by when the graph is Positive and Negative on my assignment.

[@PramodKumar-en7fk]

Thumbs up explains very well

[@obedsantos4571]

The intervals where this graph is increasing or decreasing would be totally different if this was the graph of F ' (x). Let's just keep that in mind. Sal did a great explanation on the graph of F (x).

[@icewither7247]

Thanks!!

[@alfinbasheet8949]

F'(x) or F(x) we need to choose for looking sign (+ve or -ve) ? Please answer me

[@sgsarv]

Omg I have a test on this tmmr and I was confused all class thanks for helping me understand

[@shizyninjarocks]

Very helpful, thanks!

[@MadatMi]

thnx 😄😄

[@saturn3455]

This was helpful, thank you

[@sushantadas129]

I think the positive interval f(x) was going to be ab,I don't know my thought is correct or not

[@seyamrahman1002]

Yup thought the same too, my teacher said the intervals are basically when the function starts going up/down so notations would be (-infinity, half way between a and b), (half way between a and b, half way between b and c), and (c, infinity)

[@Sc0p6s-]

i fw u heavy vro

[@angelikabori6634]

Thanksss!

[@bodhi4742]

thanks sal :) 💞🤙🏽🌬

[@edenassraf5196]

wait I still don't understand why it is not less than or equal to. can someone please explain?

[@dadj3118]

Ughhhh didn’t answer my question

[@badrulamin5400]

how to make video like this? using what app?

[@guapo1385]

only need 45 seconds to understand something my teacher has been trying to explain for weeks lmaooo

[@wxoxozy]

How do people not understand this?

[@azrabanu641]

erm..some ppl may not b as smart as ya mate :')

[@yoshi40710]

You’re one of those people in class that complains an A -

[@cruzaderfox593]

I got a test on this today....my grade is about to drop

[@foster28371]

I DONT UNDERSTAND I HAVE HOMEWORK ABOUT THIS AND IMA FAIL. HELPP MEEE

[@tokyo7671]

ok

[@floriographyy]

did u fail after all

[@foster28371]

@@floriographyy no

[@pau2483]

1 comment

[@edgyblackkid]

why aint he just say it like this ??

[@edwincisneros8058]

I don't get it

[@MyBilal19971]

wonderful presentation sir.But wouldnt be point B the point of inflexion if the graph line had been more steeper through point B . I mean we can regard that point as straight line.Nor the line curves upward or curves downward at that point. - via YTPak(.com)

[@Coreofanapple]

least favorite part of my algebra class so far

[@morgyn2650]

I’m crying. I just.. yah

[@abbottdraws9271]

when khan academy is your subsitute teacher the whole semester so your teacher can coach and you don't understand khan at all

[@Valeria_noaxoxo]

who else is crying rn

[@Coreofanapple]

me (what is this. How is this going to EVER help me in the future)