Ask a master with a little expertise to help you do the math

Relax stress and let yourself go. Cherish your family and cherish your life. I believe that you will be able to achieve great things tomorrow tomorrow. Because you have experienced the trough, you must climb to the highs.

Gender: Male Gregorian calendar: January 21, 1987.

Dry: Wuchen Yi Mao Ren 戌 Yi Si 10 years old.

Universiade: Bingchen, Ding Si, Wuwu, Jiwei, Gengshen, Xinyou.

Personality analysis: is a person who is used to being consistent, once a decision is made, he will stick to it and never back down. Although there are many enemies, there are also many supporters. Sociable and suitable for big deals.

Brilliant talkers with smart, scientific and experimental brains should be popular. An independent and organized spirit and a charming personality make it easy for you to get what you want from your parents, friends and colleagues.

In terms of career, you can engage in a career in thinking.

Pay more attention to your body.

The love between husband and wife is extraordinary, and they love each other like guests, like glue and knees, and they are inseparable.

Good at art --- painting, **, and diligent in learning and hard work.

I can get the help of nobles and friends, so that I can benefit a lot.

Brothers are weak, have discordant feelings, and are less respectful of their parents.

The fate with the son is thin, the daughter has more children and fewer children, and the late luck is more unlucky.

Clever and scheming, quite a military talent.

Do good deeds in your life, come and go non-stop, and work more and more, there is no shortage of food and clothing, noble people are promoted, Pepsi is satisfactory, ordinary in the early years, prosperous in the later years, and women are good at handling virtuous lives.

That y'=dy dx is the reciprocal of y=dy dx, so just find the reciprocal of y and then deform. i.e. dy=y'*dx, dx just write it directly.

The answer is. dy= [-5*e (-5x)-(secx) 2] *dx click, ok.

Name: Someone.

Gregorian calendar: Friday, June 23, 1978 (Beijing time).

Lunar calendar of birth: May 18, Wuwu year.

Food Yen robbery.

Kun Zao Wu Wu Wu Ding (Rikongzi, ugly).

Noon noon unitary.

Tibetan Gan, Hexadine, Hexadine, Ethylpentane, Xin.

Wounded robbery, wounded robbery, Indian food officials.

Topography Diwang Diwang crown belt dead.

Nayin, fire in the sky, fire in the sky, earth in the sand, fire under the mountain.

robbing Indian officials and killing talents.

Universiade, Ding Si, Bingchen, Yimao, Jiayin, Guichou, Renzi, Xinhai, Gengxu.

The official crown is bathed in the tomb of the immortal and the fetus.

Age 7 17 27 37 47 57 67 77

Year 1984 1994 2004 2014 2024 2034 2044 20

You have a strong personality, a bad temper, the eight-character husband star is too weak, there is a message of deception, the wealth is weak, the fire is prosperous, the wood is reborn, the fire is jealous and then helped, and you are the eight-character wood fire all the way, the luck is not strong, and the elders owe the eight characters are too hard, in 2014, they entered the Jiayin Yun, Yinwu fire, Jiamu and fire, the fire burned a piece of the sky, the fortune is more unsmooth, the relationship between husband and wife is more tense, and the husband owes An!

Solution: (1) When 0 x 6, let y=k1x

I get it by substituting a dot (6,600).

k1=100

So y=100x;

When 6 x 14, let y=kx+b

The image is (6,600) and (14,0).

6k+b=600

14k+b=0

The solution is k=-75

b=1050∴y=-75x+1050

y={100x 0 less than or equal to x less than or equal to 6y={-75x+1050 6 less than or equal to x, less than or equal to 42) when x=7, y=-75 7+1050=525, v B=525 7=75 (km hour).