But the process of learning mathematics is to exercise your logical thinking ability and cultivate your analytical ability to consider problems, which is very helpful for your future work and life.
For example, shopping depends on the cost performance.
For example, the same brand of sugar, 500g 5 yuan and 1000g 8 yuan, which package do you buy is cost-effective?
The same brand of sugar, their quality is the same, quality, cost performance = quality/price, and then the numerator is the same, compare the denominator price,
Calculated unit price: a: 5/500 =1100 = 0.0 1 yuan/gram, B:8/ 1000=0.008 yuan/gram, 0.01yuan.
The unit price of A>B and A is greater than B, and the unit price of B is less than A,
It is more cost-effective to choose a smaller unit price, because the denominator is smaller with the same numerator, and the value of the score is larger, that is, the cost performance is higher.
Price a > price b,
B price
The molecules are the same,
Cost-effective B > Cost performance a
It is more cost-effective to choose B.
So buy B.
This is a category,
Considering the problem comprehensively,
There is also a mathematical calculation,
Some people want to take advantage of you, for example, you and she are friends and then invite each other to dinner.
For example, last time you invited her 100 yuan, and then she owed you 50 yuan, and then she invited you back to 80 yuan next time, that is, you owed him 40 yuan. You owe him 40 yuan and deduct it from the 50 yuan she owes you, 50-40 = 10, which means you don't owe him money, and then he owes you 10, and then he hasn't invited you back. Therefore, such friends can't make friends. After going out, they are all AA values. How much will two people eat? Divide equally, eat 100, 50 each, 40 each, 20 each.
Third, in the future, computers will be used in many jobs. For example, if you are a teacher, you should learn to prepare electronic courseware by computer. If you are in college, you should use computer to program, then design drawings, do graduation project, check information with computer, and then write papers, such as being a doctor and recording medical records with computer, or if you are engaged in finance, you should use financial software to settle accounts and use Excel to write statements, so health comes first. If you are an engineer, you will draw pictures by computer in the future, and your design will come first.
Again, when you girls come to have your period every month, you should also calculate the menstrual cycle. Your girl's menstrual cycle is 28 days, divided into menstrual period, safety period and ovulation period. The menstrual period is 5-7 days, with an average of 6 days. Ovulation period 10 day, safe period 12 day, and then she enters the first menstruation of the next menstrual cycle after the last safe period. 12 years old has an official holiday, with an average menopause of 60 years old, 48 years, one menstrual cycle of 28 days, and one menstrual cycle has an official holiday, so the number of menstrual cycles in 1 year =365/28= 13.0= 13, which is approximately equal to/kloc-.
For example, if your menstrual period is from September 5th to September 10, then the date of your next menstrual period should be September 5th+28th, = September 3rd1day, 33 & gt30, and so on, 65438+1October 3rd, that is, 65438. But 3.5 doesn't belong to Z, so we can't get it. F(3)=f(4)=fmax, between 1 and 3.5, the number increases monotonously, with 3.5 reaching the maximum, while 3.5 dropping to 6, until we know that the number of 6 is the least, and maybe a little is excluded on the sixth day of the last day, and then after changing sanitary napkins.