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Posted: 10/3/2014 8:33:11 PM EST
[Last Edit: 10/3/2014 10:29:42 PM EST by Roebuck]
Edit
I bring you a new problem.






Link Posted: 10/3/2014 8:35:49 PM EST
Did you draw that with a crayon?
Link Posted: 10/3/2014 8:36:28 PM EST
Do you know why an AC waveform is called a sine wave?
Link Posted: 10/3/2014 8:36:56 PM EST
Attending college in Florida for starters.
Link Posted: 10/3/2014 8:36:58 PM EST
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Originally Posted By NwG:
Did you draw that with a crayon?
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intous splash, without drivers, hence the jagged.
Link Posted: 10/3/2014 8:38:20 PM EST
Yea, well screw that shit.

Posted Via AR15.Com Mobile
Link Posted: 10/3/2014 8:38:46 PM EST
Clearly you are doing calculus wrong.

Next question.
Link Posted: 10/3/2014 8:39:01 PM EST
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Originally Posted By ICEMAN19047:
Attending college in Florida for starters.
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HAHA HAHAHAHA SO WITTY HAHA OH EM GEE
Link Posted: 10/3/2014 8:40:12 PM EST
Link Posted: 10/3/2014 8:41:56 PM EST
[Last Edit: 10/3/2014 8:42:12 PM EST by Keekleberrys]
Link Posted: 10/3/2014 8:41:58 PM EST
for starters the derivative of sin 3x is 3 cos 3x
Link Posted: 10/3/2014 8:43:53 PM EST
Y=mx+b is the equation you want.

It seems that you found m. Now all you need to do is find b such that y is true when x is the given value.
Link Posted: 10/3/2014 8:45:03 PM EST
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Originally Posted By ICEMAN19047:
Attending college in Florida for starters.
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Link Posted: 10/3/2014 8:48:31 PM EST
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Originally Posted By Desdinova721:
for starters the derivative of sin 3x is 3 cos 3x
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plug in your x value into the derivative in order to get you "m" in slope intercept form y=mx+b. then solve for b by using your known coordinate points.

BTW..

Lim(eng)=bis
g.p.a?0
Link Posted: 10/3/2014 8:50:05 PM EST
Ok, you want to use your calculated slope and the point they provide in conjunction with the point slope formula for a line for part a.

Part B you can easily rule out the two lines that are not tangent to the curve. To decide on the answer plug in 0 for x and know that the sine of 0 is 0.
Link Posted: 10/3/2014 8:54:26 PM EST
The limit of Derp as Feinstein approaches gun control is infinity.
Link Posted: 10/3/2014 8:54:51 PM EST
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Originally Posted By Desdinova721:
for starters the derivative of sin 3x is 3 cos 3x
View Quote

traitor
Link Posted: 10/3/2014 9:00:14 PM EST
Fuck Webassign.
Link Posted: 10/3/2014 9:02:52 PM EST
The derivative of sin(3x) = 3cos(3x)

[I think you show it as 3sin(3x) if I am reading your solution correctly.]

So the slope m of your tangent at the point y=pi/4 is 3cos(3pi/4), and it must go through the given point, which you can plug into m(y2-y1)=x2-x1 and solve for y2 in terms of x2.

But I don't have a calculator handy.

I think the top right graph is the right answer because it goes trough the given point and is tangent to the curve at that point. Not sure.
Link Posted: 10/3/2014 9:03:33 PM EST
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Originally Posted By Desdinova721:
for starters the derivative of sin 3x is 3 cos 3x
View Quote

Link Posted: 10/3/2014 9:03:58 PM EST
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Originally Posted By yotehunter422:
Fuck Webassign.
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THIS.
Link Posted: 10/3/2014 9:04:14 PM EST
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Originally Posted By PiccoloPlayer:
The limit of Derp as Feinstein approaches gun control is infinity.
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and this
Link Posted: 10/3/2014 9:07:00 PM EST
You put 2 d's in the same ( ) and all you put between them was a cheap paper plate..

Link Posted: 10/3/2014 9:07:13 PM EST
What are you doing wrong?

You're taking fucking calculus you nut bag.

And working on it on a Friday night for crying out loud.

Go get drunk and get laid already ...


Youth...wasted on the young

Oh yeah the answer is J over D*I
Link Posted: 10/3/2014 9:07:37 PM EST
[Last Edit: 10/3/2014 9:11:50 PM EST by MRW]
Link Posted: 10/3/2014 9:17:43 PM EST
Got A's in calc years ago. Never even used it once within my profession. Statistics I only needed one class and I need it for every damn thing. Go figure.


OP, good luck. It comes to you once you get the basics down.
Link Posted: 10/3/2014 9:18:55 PM EST
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Originally Posted By MRW:
The original equation does not have an amplitude of 3, so graph a is incorrect. If so, it would be 3sinx. Graph b is the only other one that has a tangent line to the graph at pi/4, so graph b it is

And the derivative of the sine function is cosine



And you write d/dx in front of the expression you are differentiating.
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turned out my answer was correct. i just forgot to put a negative in front, and devided by 3 instead of 2 because of a type. when you pull ou the d/dx you bring it to the front to multiply
Link Posted: 10/3/2014 9:20:34 PM EST
Link Posted: 10/3/2014 9:20:39 PM EST
It's been over 30 years since I aced calculus. I've managed to forget all of it.
Link Posted: 10/3/2014 9:25:42 PM EST
This thread is so full of AIDS and EBOLA.

Fuck this thread.
Link Posted: 10/3/2014 11:48:51 PM EST
mauhahahah
Link Posted: 10/3/2014 11:53:35 PM EST
Originally Posted By Roebuck:
Edit
I bring you a new problem.

http://i1270.photobucket.com/albums/jj606/roebuck1020/Capture_zps453fa638.png




View Quote


its pretty obvious the tangent line is going to be negative... you loose points for problem awareness there...
Link Posted: 10/4/2014 12:14:06 AM EST
word i just looked it up ... use the distance formula with limted of the function as x approches zero...
Link Posted: 10/4/2014 12:48:12 AM EST
[Last Edit: 10/4/2014 12:48:27 AM EST by DeSeRT_RaT_7]
Mastering Physics is worse. For WebAssign always do the "Watch It," the guy is very helpful.

Also the slope is negative and very small
Link Posted: 10/4/2014 12:55:15 AM EST
what of that did you input?
Link Posted: 10/4/2014 1:05:08 AM EST
[Last Edit: 10/4/2014 1:10:26 AM EST by LuckyDucky]
Link Posted: 10/4/2014 1:08:59 AM EST
Hmm. I've used those web sites, but never for math. The green box confused me, not sure if that is help, answer, or what.
Link Posted: 10/4/2014 1:10:43 AM EST
Link Posted: 10/4/2014 1:11:51 AM EST
[Last Edit: 10/4/2014 1:12:02 AM EST by InfiniteGrim]
Ah ok, and reading the thread, when the question was changed confused me. I was wondering how in the hell anyone thought y=-2 would be tangent to that.
Link Posted: 10/4/2014 1:22:08 AM EST
When you're done with his hw could y'all do mine?
Link Posted: 10/4/2014 1:24:16 AM EST
Umm, potatoe, what do I win!
Link Posted: 10/4/2014 1:26:18 AM EST
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Originally Posted By cda97:
Umm, potatoe, what do I win!
View Quote

A seXy potato
Link Posted: 10/4/2014 1:39:31 AM EST
I'd do it!

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Originally Posted By HK45USER:
Originally Posted By cda97:
Umm, potatoe, what do I win!

A seXy potato
http://images.sodahead.com/polls/001559173/301659831_sexy_potato_answer_2_xlarge.jpeg

Link Posted: 10/4/2014 7:00:58 AM EST
Is there a Common Core version of the question?
Link Posted: 10/4/2014 7:08:58 AM EST
Holy shit. They give you 50 tries before you don't get credit? I was lucky if I got 3, with only 2 tries for the whole thing.
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