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Today, 03:16
Put a +C at the end of your indefinite integral, and then you are correct.
1 replies  19 view(s)

Today, 02:27
Look at the numbers. Can you divide by 0? Can you take an even root of a negative number?
6 replies  107 view(s)

Yesterday, 18:07
I appreciate another take on the sites that I have listed. The more views I get from you all, the better. I view the way MHB goes as a group decision...
6 replies  218 view(s)

Yesterday, 11:06
The problems with MHF were always about personnel and authority structure. If the leaders of MHF had been willing to appoint multiple admins, like we...
6 replies  218 view(s)

Yesterday, 07:06
First we need to write the DE as a system of first order DEs.
Let $\displaystyle u = y $ and $\displaystyle v = y' $. Then
$\displaystyle...
0 replies  40 view(s)

Yesterday, 06:42
We would need to recognise that the integral in the equation is a convolution integral, which has Laplace Transform: $\displaystyle...
0 replies  30 view(s)

Yesterday, 06:26
Taking the Laplace Transform of the equation gives
$\displaystyle \begin{align*} s^2\,Y\left( s \right)  s\,y\left( 0 \right)  y'\left( 0...
0 replies  21 view(s)

Yesterday, 02:53
Thank you for pointing this out. I have not looked at other sites in a long time so don't know these things. If a merge was possible I promise I...
6 replies  218 view(s)

Yesterday, 02:24
I'd be worried about a merge, the spam on MHF is out of control and has been for years, and I have concerns that should we merge, the same thing...
6 replies  218 view(s)

Yesterday, 02:01
Hey firemath,
Thank you for the reply. It's great to hear back from someone on this tough topic. I actually strongly prefer a merge over other...
6 replies  218 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  73 view(s)

April 6th, 2020, 16:33
What do you mean "there is no graph on the positive side"? Of couse there is.
6 replies  107 view(s)

April 6th, 2020, 16:12
How many "capsules" are there on the Ferris wheel?
2 replies  73 view(s)

April 6th, 2020, 12:06
Hi all,
I think even we do switch to XF (is still going to happen) the time has come to make a change. We have a database of amazing content here...
6 replies  218 view(s)

April 6th, 2020, 11:37
Hi all,
I hope you are all safe, healthy, and not affected in a serious way by the world wide COVID19 virus. Here in the US it has completely...
0 replies  62 view(s)

April 6th, 2020, 11:33
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  444 view(s)

April 6th, 2020, 09:09
what does n1 represent?
in the equation I wrote in post #4, $n$ represents the number of additional freight loads
10 replies  444 view(s)

April 6th, 2020, 01:44
Why are you plugging in large negative values for x? Surely for an infinite limit you should be plugging in large positive values.
As for a hint,...
6 replies  107 view(s)

April 5th, 2020, 20:46
This is a $\displaystyle 1^{\infty} $ indeterminate form. It can be transformed into a form that can use L'Hospital's Rule by
$\displaystyle...
7 replies  289 view(s)

April 5th, 2020, 10:58
I have a better idea ... explain how you derived your function.
10 replies  444 view(s)

April 5th, 2020, 10:02
Since this is of the form $\displaystyle \frac{f\left( t \right)}{t} $ we should use $\displaystyle \mathcal{L}\,\left\{ \frac{f\left( t \right) }{t}...
0 replies  55 view(s)

April 5th, 2020, 09:15
To apply this RungeKutta scheme, we will need to write our second order DE as a system of first order DEs.
Let $\displaystyle u = y $ and...
0 replies  46 view(s)

April 5th, 2020, 08:53
The Bisection Method solves equations of the form $\displaystyle f\left( x \right) = 0 $ so we must write the equation as $\displaystyle 11\cos{...
0 replies  193 view(s)

April 5th, 2020, 03:46
The Secant Method is a numerical scheme to solve equations of the form $\displaystyle f\left( x \right) = 0 $, so we must rewrite the equation as...
1 replies  213 view(s)

April 4th, 2020, 21:13
It's a bit hard to use something that you haven't given us...
1 replies  280 view(s)

April 4th, 2020, 12:16
simplified the initial cost function ...
$C(v) = 1375\left(\dfrac{44.5}{v} + \dfrac{14.9}{180v}\right)$
minimum cost occurs at $v \approx 114...
10 replies  444 view(s)

April 4th, 2020, 09:26
$v(t) = \cos{t}+\sin{t} \implies a(t) = \cos{t}\sin{t} \implies a\left(\dfrac{3\pi}{4}\right) = \sqrt{2}$
4 replies  351 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  302 view(s)
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