Calculus 3.08d - Trig Derivative Examples

[awholelottayeah]

i love this. so brief and clear. thank you!

[abswing5]

Isnt dirivetive of csc is = -csc x cot x ? But u wrote it as -csc x tan x !

[derekowens]

@abswing5  Yes, thanks. I'll take a look at that, and put it on my list of items to fix.

[magla3oon]

at 4:50 cot x = 1/tan x ... not cos x / sin x

[derekowens]

@magla3oon Those are actually equivalent. 1 / tan x is equal to cos x / sin x.

[thekiddooo]

hehe you sound like george bush

[ajskdlfla]

nom nom nom woot woot.

[jenbrenner]

I'm enrolled in cal 3 after its been six years since I took cal1 and 2 - this video was VERY VERY helpful...great refresher!

[T4styTHC]

I've done it so many times, don't worry about it yo (meant to make it 1 message)

[T4styTHC]

3:50 you just said csc^2 and you wrote csc^3

[derekowens]

@T4styTHC Thanks. I'll put that on my list of things to fix.

[sparks1788]

@T4styTHC actually he said "cosecant cubed four x". Cubed = 3rd power... Or maybe he fixed it.

[T4styTHC]

@sparks1788 It was initially csc^3

after taking the derivative however it should be csc^2, which was what he had originally put down only to soon contradict what he had written, simple mistake

[Banacea]

At around 3:48, sec^3 why it is not negative sec^3 as multiplying sec^2 (3x) * -sec (3x) should give?

[derekowens]

@Banacea Right. I took the negative sign into account right before that, at about 3:36.

[Banacea]

@derekowens Thank you for the reply. Actually I came to know that immediately after I wrote my question; I tried to cancel posting the question but....

[filipinosoccaplaya]

you saved my life....

[neuroPete88]

Great examples. 

[thomann061]

great video! helps a lot!

[jdelgado91932]

hey....wait derivative of cscx is -cscxcotx NOT -cscxtanx

dont sweat, it i'm not going to chop you up. your human

[derekowens]

Whoops, my mistake. I think you're right on that one. Thanks.

[pandab50]

thanks. the hardest thing about studying calc or any math is not having enough examples to keep practicing and working with the concepts. thanks for this.