Tab Content
• Yesterday, 17:57
When I throw it at Octave online, I get: So it seems it is none of the above, but the answer $3$ is close. For reference, I have re-encoded...
1 replies | 53 view(s)
• April 6th, 2020, 17:02
Prove It is not giving you the answer he is giving you a suggestion that you can use the limit he posted. See if there is any kind of substitution...
4 replies | 87 view(s)
• April 6th, 2020, 16:46
This should be fairly simple, convert 360 degrees in 18 minutes to x degrees in 1 minute. The graph shows height of a capsule above the ground in...
2 replies | 57 view(s)
• April 6th, 2020, 11:34
Hey mathmari!! This is an example where Newton-Raphson can have problems if we are not careful. If we pick a starting value that is too far from...
2 replies | 42 view(s)
• April 6th, 2020, 11:33
skeeter replied to a thread [SOLVED] Transportation calculus in Pre-Algebra and Algebra
that's my mistake ... should be 14.9. I doubled the numerator and denominator to get the coefficient of $n$ to be 1 instead of 0.5. When I decided...
10 replies | 398 view(s)
• April 6th, 2020, 09:09
skeeter replied to a thread [SOLVED] Transportation calculus in Pre-Algebra and Algebra
what does n-1 represent? in the equation I wrote in post #4, $n$ represents the number of additional freight loads
10 replies | 398 view(s)
• April 5th, 2020, 10:58
skeeter replied to a thread [SOLVED] Transportation calculus in Pre-Algebra and Algebra
I have a better idea ... explain how you derived your function.
10 replies | 398 view(s)
• April 5th, 2020, 10:37
I substituted $n=\frac 1{x^2}$, which also means that $x^2=\frac 1 n$. So we get $\Big(1 + \frac 32 x^2\Big)^{1/x^2} = \Big(1 + \frac 32 \cdot \frac... 7 replies | 261 view(s) • April 5th, 2020, 09:14 It's like this: $$\Big(1-\frac 12 x^2 + \ldots\Big)\Big(1+\frac 12 (2x)^2 - \ldots\Big)\\ =1\cdot 1 -\frac 12 x^2 \cdot 1+1\cdot \frac 12 (2x)^2 -... 7 replies | 261 view(s) • April 5th, 2020, 07:04 The series expansion of \cos x = 1 - \frac 12x^2 + \ldots. And the expansion of \frac 1{1-x} = 1+x+x^2+\ldots So:$$\frac{\cos(x)}{\cos(2x)}... 7 replies | 261 view(s) • April 5th, 2020, 01:08 Here is this week's POTW: ----- Suppose that the positive integers$x, y$satisfy$2x^2+x=3y^2+y$. Show that$x-y, 2x+2y+1, 3x+3y+1$are all... 0 replies | 213 view(s) • April 5th, 2020, 01:02 No one answered last week's POTW.(Sadface) Below is a suggested solution: The given function is the square of the distance between a point of the... 1 replies | 173 view(s) • April 4th, 2020, 12:16 skeeter replied to a thread [SOLVED] Transportation calculus in Pre-Algebra and Algebra simplified the initial cost function ...$C(v) = 1375\left(\dfrac{44.5}{v} + \dfrac{14.9}{180-v}\right)$minimum cost occurs at$v \approx 114...
10 replies | 398 view(s)
• April 4th, 2020, 09:26
skeeter replied to a thread [SOLVED] 299What is the acceleration in Calculus
$v(t) = \cos{t}+\sin{t} \implies a(t) = \cos{t}-\sin{t} \implies a\left(\dfrac{3\pi}{4}\right) = -\sqrt{2}$
4 replies | 322 view(s)
• April 3rd, 2020, 15:47
I have obtained access to the full solutions manual, after contacting Wiley about it. I will not type up the solution in full, but simply note a few...
1 replies | 279 view(s)
• April 3rd, 2020, 10:39
skeeter replied to a thread [SOLVED] Transportation calculus in Pre-Algebra and Algebra
What are your units for speed, the $x$ in your cost function? I get cost as a function of speed, $v$, in km/hr ... $C(v) = 1375 \bigg$ unit...
10 replies | 398 view(s)
• April 2nd, 2020, 17:07
skeeter replied to a thread f in Calculus
don't know math ... ?
5 replies | 335 view(s)
• April 2nd, 2020, 15:47
In the mid-1990's, an electrical engineer/computer scientist by the name of Judea Pearl started to change the world by greatly improving our...
0 replies | 242 view(s)
• April 2nd, 2020, 12:25
Klaas van Aarsen replied to a thread f in Calculus
It appears the answer is: dkm Acronym for "don't kill me". Often used when somebody says something that somebody else finds really funny,...
5 replies | 335 view(s)
• April 2nd, 2020, 11:56
topsquark replied to a thread f in Calculus
I believe the proper question is "What the 'f'?" -Dan
5 replies | 335 view(s)
• April 1st, 2020, 15:04
$\newcommand{\doop}{\operatorname{do}}$ Problem: (This is from Study question 4.3.1 from Causal Inference in Statistics: A Primer, by Pearl,...
1 replies | 279 view(s)
• March 31st, 2020, 19:28
skeeter replied to a thread [SOLVED] 299What is the acceleration in Calculus
why did you do that? ... ... if originally, $x = \sin{t}-\cos{t}$, then $v = \cos{t} + \sin{t} = 0 \implies t = \dfrac{3\pi}{4}$
4 replies | 322 view(s)
• March 31st, 2020, 17:53
topsquark replied to a thread [SOLVED] 299What is the acceleration in Calculus
Wait! What do you mean by you changed it to v(t)? The particle's position is x(t) = sin(t) - cos(t) means that v = \dfrac{dx}{dt}. You can't just...
4 replies | 322 view(s)
• March 30th, 2020, 05:31
Let's take a look at a couple of examples. If $f(x)=x$, then $f'(x)=1$ and $f''(x)=0$. So $\lim\limits_{x\to +\infty}f'(x)\ne 0$, isn't it?...
21 replies | 499 view(s)
• March 30th, 2020, 04:26
Yep. (Nod) And no, nothing more specific.
21 replies | 499 view(s)
• March 30th, 2020, 03:32
I believe so yes. Consider $f(x)=\ell$. It satisfies all conditions, doesn't it? (Wondering) And it is monotone instead of strictly monotone. To...
21 replies | 499 view(s)
More Activity

### 6 Visitor Messages

1. Hello Greg
2. Thanks for putting up the sp tags. It somehow slipped my mind!
3. Hey Greg, glad to see you here now!
4. Hi Greg! Welcome to MHB. It's great to see you here.
5. Weclome Greg ,
6. Hey there Greg!

If you have any question or concerns, please feel free to shoot me a message, and if I can't answer your question, I will ask someone who can! I highly recommend introducing yourself in the Introductions forum.

Best Regards,

Mark.
Showing Visitor Messages 1 to 6 of 6

#### Basic Information

Location:
London Ontario, Canada - The Forest City
Country Flag:

#### Statistics

Total Posts
1,379
Posts Per Day
0.53
Thanks Given
6,420
2,746
1.991
##### Visitor Messages
Total Messages
6
Most Recent Message
March 14th, 2018 13:09
##### General Information
Last Activity
Yesterday 22:06
Last Visit
Yesterday at 18:59
Last Post
January 6th, 2020 at 05:27
Join Date
February 6th, 2013
Referrals
1
Referred Members
Dilliebar98
 Previous Username Date Changed Changed By greg1313 February 8th, 2019 at 23:37 Greg

### 18 Friends

1. #### AckbachOffline

Indicium Physicus

2. #### AcquirerOffline

MHB Apprentice

MHB Master

4. #### FallArkOffline

MHB Craftsman

5. #### JanssensOffline

MHB Craftsman

6. #### JoppyOffline

MHB Craftsman

MHB Seeker

8. #### lfdahlOffline

MHB Journeyman

9. #### MarkFLOffline

Pessimist Singularitarian

10. #### mathlearnOffline

MHB Craftsman

Showing Friends 1 to 10 of 18
Page 1 of 2 12 Last