The little woman kneels and begs! Please help!

It's better to find a person who understands the computer around you.,Since it's been poisoned,It's best to reinstall the system.,And then install an anti-virus software to check whether there are viruses on other disks.

The next Chinese one, Jiang Min is good To update frequently, just sweep often.

If you reboot, press F8 to enter safe mode when booting up during installation.

If the machine is not well configured, don't use Kahandski because it's really stuck

Reinstall it, buy a system disk, open the computer and keep clicking the dele key, enter the motherboard BIOS settings, click enter on the first boot, find the CD-ROM, and then press enter to confirm, press F10 to save and launch, put the disk in the optical drive and restart, see the prompt press any key to start from the optical drive, and then follow the prompts, it can be simple.

Find a GG from your computer to help you :)

A word of advice to you, don't try to find a solution online.

As you can see from your question, you don't know anything about computers...

It is recommended that you ask a friend to help you reinstall the system, or find someone from a computer company to reinstall the system.

It is highly recommended to find a computer company, and it doesn't take a few dollars to install the system, about 30 yuan!

2.Restart your computer Press and hold the F8 key and select Safe Mode.

3.Antivirus.

This one is very good, and there is an upgrade report on it.

McCafe is an antivirus that is easy to use and free to live for.

It doesn't cost anything.

Hehe··· Go online and offline.

Symantec Kaba You go under the GB Software Park.

It's so serious

It is advisable to reinstall the system.

If you just want to solve this problem, when you solve it, it will take time and energy to reinstall the system.

That's it?

1. Ether: physical properties: colorless, liquid, highly volatile, special odor; Extremely flammable (this is also the reason why ether with higher purity should not be stored in the open for a long time, and its vapor may attract an open flame at a distance**.) ）

Freezing point, boiling point, relative density.

Chemical properties: relatively stable, rarely react with reagents other than acids; It will slowly oxidize into peroxide or acetaldehyde in the air, peroxide is unstable, easy to heat, and should be stored away from light.

2. Polyethylene material:

Physical properties: odorless, non-toxic, wax-like feel, low temperature resistance (the minimum use temperature can reach -70 -100).

Chemical properties: corrosion resistance, low water absorption, electrical insulation.

Uses: Mainly used to manufacture films, containers, pipes, monofilaments, wires and cables, daily necessities, etc., and can be used as high-frequency insulating materials for TVs, radars, etc.

Let this project be 1 (you have to learn to set 1, this is a common practice for this type of engineering problem) so the efficiency of A is 1 24, and the efficiency of B is 1 20, and if you cooperate, the efficiency is 1 24*

Therefore, if the minimum number of days of cooperation is required, it can only mean that after X days of cooperation between A and B, B will do the rest (because of B's high efficiency).

1/24*。Solve x

I guess that's what it means.

First of all, let's take a look at how long Xiaohong walked 900 meters when Xiaodong caught up with Xiaohong, and Xiaohong walked 50 meters per minute for 14 minutes.

Xiaodong set off 10 minutes late, so it took Xiaodong 14-10 4 minutes to catch up with Xiaohong, so Xiaodong's speed on the bike was 900 4 225 meters.

The equation sets Xiaodong to ride at a speed of x

900/x＝（900/50）-10

Xiaodong rides at a speed of x.

10=900➗50-900➗x

Solution: The distance of 2 people is the same, both are 900 meters, but Xiaohong walked 10 minutes before Xiaodong. Then the time for Xiaohonghua to walk 900 meters minus the time for Xiaodong to ride 900 meters is an interval of 10 minutes. Time is equal to distance divided by speed, so got it?

900 50=18 minutes.

18-10=8 minutes.

900 8 = i.e.: Xiaodong chases Xiaohong at a speed of meters per minute in order to catch up with Xiaohong at 900 meters).

In other words, can't you go to the next homework gang or the little ape to search for questions?

Green World, 2002 03 issue when I watched it was nine years old, I watched it for a year.

y'=4x+1/x

y''=4-1/x^2

2]y'=2e^[2x-1]

y''=4e^[2x-1]

3]y'=cos-xsinx

y''=-sinx-[sinx+xcosx]=-sinx-sinx-xcosx

2sinx-xcosx

Hope it helps.

I don't know how to ask questions.

The first y'=4x+1/x

y''=4-1/x^2

The second y'=2e^[2x-1]

y''=4e^[2x-1]

y'=cos-xsinx

The third y''=-sinx-[sinx+xcosx]=-sinx-sinx-xcosx

2sinx-xcosx

This is a problem with high numbers, first find the first derivative, and then find the derivative again, generally with a formula.