the first graph is a graph of (x^2). since the derivative of (x^2) is (2x), by inputing -3 for x in (2x), you get -6. so f ' (-3) = -6 hope this helps.
are you willing to ad a video that connects limit to the dirrevative lecture, please add it, sorry i dont plan on buying your teaching service from your website.
thanks for the video i actually starting to understand it better. Do u have any videos on how a function can fail to be differentiable? i would appreciate it thanks
Thank You, makes things a lot more clear now!!
kmovaffagh 2 months ago
how do we find the graph of the function when the graph of the derivative is given without f(x) ?
kgfreak 4 months ago
How do i find the derivative of a graph that has no clearly defined f(x)?
deltasworder1x 7 months ago
it was good but next time please could you define ur functions before you do them thanks.
D34thD4y 8 months ago
NICE ONE
D34thD4y 8 months ago
your the man Walt. Love the Simpson character also.
camdizzel 1 year ago
Thanks for the upload! I've had a lot of problems with questions like these lately.
LadyofTalent 1 year ago
Thank you, it was easy to understand
prakis 1 year ago
Great video!! Thanksssssss miles
MsSweetsmile 1 year ago
I have a calculus test in 3 hours, this is a life saver....
aaasssfffdddiii 1 year ago
@aaasssfffdddiii I have one in 5
Tripp393 9 months ago
this is helping me a lot, thank you
StonedH 1 year ago
thanks sooooo much
sheena9877 1 year ago
I understand how to do this mathmatically just not with graphs...lol not a visual person...
Goodguylyons 1 year ago
thx for taking the time and uploading these awesome videos
Thegeaza 1 year ago
omg! thank you so much! i'm taking ap calc and could not understand this for my life!
danielapimentel43 2 years ago
I watched the video 4 times and I still dont understand how the hell he got the derivative, on the first graph how did he get -6?!?!?!?
whatever1234312 2 years ago
Comment removed
w007w007 2 years ago
This has been flagged as spam show
the first graph is a graph of (x^2). since the derivative of (x^2) is (2x), by inputing -3 for x in (2x), you get -6. so f ' (-3) = -6 hope this helps.
w007w007 2 years ago
the derivative is 2x. 2(-3)=-6
the derivative of x^2 is easy to find. you multiply the exponent with the base and then lower the power by one.
so, x^2 -> 2x^2 -> 2x
=)
latindiana21 2 years ago
@latindiana21
You can use this formula to take the derivative of everything. Also it makes it easier to understand :)
d/dx (x^n) = n(x)^(n-1)
So:
x^2 = 2x^1 or just 2x
x^3 = 3x^2
x^4 = 4x^3
and so on
iFischer08 1 year ago
@iFischer08 great!! you saved me from my Calc quiz
TheKarmatenzin 1 year ago
@TheKarmatenzin No problem!
iFischer08 1 year ago
excellent video
martintuero 2 years ago
Thanks a lot teach. My only problem is with the reverse of this, given the graph of f '(x) and determining what f (x) is
kufreak08 2 years ago
Its not confusing at all,a lot of ideas are explained here,and explained well , you would be lucky to have this man as your calculus teacher.
daco54 2 years ago
are you willing to ad a video that connects limit to the dirrevative lecture, please add it, sorry i dont plan on buying your teaching service from your website.
LTF85199 3 years ago
Cool. Thanks, Walt.
3e3op88 3 years ago
thanks for the video i actually starting to understand it better. Do u have any videos on how a function can fail to be differentiable? i would appreciate it thanks
vander23456 4 years ago
This comment has received too many negative votes show
too long and confusing
kosmosleha2 4 years ago
Thank you for taking the time to comment on my video. I will try to do better. Have a great day.:)
TeacherWalt 4 years ago 14