## Public Whois and years in domain a Seo factor

s it a Seo factor to purchase more years for the domain when it is about to expire.

Kind of confused if it is a signal to Google that the domain is here to stay and not churn and burn.

## ordinary differential equations – Find integrating factor

I am trying to solve this equation but I can’t really find an integrating factor:
$$underbrace{ycdot(1+x)}_{P}:dx+underbrace{xcdot(1+y)}_{Q}:dy=0$$
I know I must find $$mu equiv mu (x, y)$$ so that:
$$frac{partial}{partial y}(mu P)=frac{partial}{partial x}(mu Q)$$
Therefore:
$$Pfrac{partial mu}{partial y}+mu frac{partial P}{partial y}=Qfrac{partial mu}{partial x} + mu frac{partial Q}{partial x}$$
I have trouble working out the partials of $$mu$$. I have tried doing $$muequiv mu (epsilon)$$ and $$epsilon equiv epsilon (x, y)$$, therefore:
$$frac{partial mu}{partial y}=frac{partial mu}{partial epsilon} cdot frac{partial epsilon}{partial y}$$
And the same for the $$x$$. But I don’t know where to go from here. Could someone please help me?

## Ordinary Differential Equations – How Do I Find the Integration Factor of this ODE?

I wanted to know if there is a general method to find the integration factor of a given differential equation $$Pdx + Qdy = 0$$ For example, I have the following equation
$$x ^ 3dx + 2 (x ^ 2-xy ^ 2) dy = 0$$ that's not exactly.

So far I have tried to find the integration factor for all of the following cases:

1. If the IF is a function of x, I used the test to see if $$frac { frac { partial P} { partial y} – frac { partial Q} { partial x}} {Q}$$ is just a function of x.
2. I checked whether $$frac { frac { partial P} { partial y} – frac { partial Q} { partial x}} {- P}$$ is a function of only y.
3. Also whether $$frac { frac { partial P} { partial y} – frac { partial Q} { partial x}} {Q + P}$$ is a function of x-y
4. Then, when $$frac { frac { partial P} { partial y} – frac { partial Q} { partial x}} {_ Px + Qy}$$ is a function of xy
5. If $$frac { frac { partial P} { partial y} – frac { partial Q} { partial x}} { frac {yQ + xP} {y ^ 2}}$$ is a function of $$frac {x} {y}$$
6. And finally when $$frac { frac { partial P} { partial y} – frac { partial Q} { partial x}} {2 (xQ-yP)}$$ is a function of $$x ^ 2 + y ^ 2$$
And none of the above cases has proven itself in my example. Now I'm not only stuck in this example, but also find the integration factor of every other differential equation in general. Is there a way to know (and find) what form the integration factor takes without having to try all special cases? Any help would be appreciated, thanks.

## Factor 3 polynomial – Mathematics Stack Exchange

But avoid

• Make statements based on opinions; Support them with references or personal experiences.

Use MathJax to format equations. MathJax reference.

## Air Travel – Are there active, regularly scheduled commercial flights that are reserved for one gender or other demographic factor?

From 1953 to 1970, United Executive offered men's-only flights between New York and Chicago, and between Los Angeles and San Francisco.

These flights were operated by DC-6B aircraft and later by Caravelles. The flights are usually operated at 5 p.m. in each direction between the two cities (usually six days a week, except Saturdays). They banned not only women but also children, and flight attendants provided these business flights with special meals and offered free cigars.

Are there active, regularly scheduled commercial flights that are reserved for one gender or another demographic factor?

## constant factor of the street algorithms

Many references say that the large constant term is hidden in the calculation of the temporal complexity of the street algorithm.

I want to know how the huge constant term is constructed or how it is calculated mathematically. (provided that there are n matrices)

You can add more matrix constraints to make the solution easier.

Thanks a lot

## Ranking factor

I learn that there are more than 200 parameters that Google takes into account to rank the page. So can you tell me about some important parameters?

## How to factor 16x ^ 4 + 1

I don't know how to factor 16x ^ 4 + 1 since it has no real roots. It only comes out with sqrt (i) / 2 and -sqrt (i) / 2. Which method should I use? Thank you

## Differential topology – hinders the existence of a globally defined integration factor

To let $$U$$ to be an open subset of $$Bbb {R} ^ n$$ and take $$omega$$ be a nowhere smoother $$1$$-Form one $$U$$. The Frobenius theorem implies that near every point of $$U$$, $$omega$$ can be written as $$g , { rm {d}} f$$ for suitable locally defined smooth functions $$f$$ and $$g$$ iff $$omega wedge { rm {d}} omega = 0$$. Here's my question (s): For one $$1$$-form $$omega$$ on $$U$$ (never disappear and $$omega wedge { rm {d}} omega = 0$$) What is the obstacle to the existence of global smooth functions? $$f$$ and $$g$$ on $$U$$ With $$omega = g , { rm {d}} f$$? Can this be formulated as the disappearance of a homotopic invariant of? $$U$$? What is a good non-example in which such a global representation of $$omega$$ does not exist?