The difference between economic law and Commercial Law

The difference between economic law and Commercial Law

Economic law includes: Labor Law, consumer protection law, auction law, commercial bank law, securities law, environmental protection law, etc
Commercial law includes: Company Law, partnership law, bankruptcy law, bill law, insurance law, maritime law, etc

Compare the size of two algebras, in addition to the difference method, there is also the quotient method, how to calculate the quotient method, please have a class question to explain

Let a and B be two numbers;
If at least one of a and B is 0, it is not suitable for commercial law;
If both are non-zero real numbers, there are three cases
1. One positive and one negative, you can directly see the symbol comparison
2. Two negatives, a divided by B, quotient greater than 1, then ab
If the quotient of division between - 5 and - 4 is greater than 1, then - 5b, if the quotient is equal to 1, then a = B, if the quotient is less than 1, then A4

It is proved that the function f (x) = - X & # 179; - 3x + 1 is a decreasing function in the domain of definition

The domain of the function is r
Let x1, X2 ∈ R, and X1 < x2,
f（x1)－f（x2）=(-x1³-3x1+1)-(-x2³-3x2+1)=（x2³－x1³）＋3（x2-x1）
∵ x10
∴f（x1)－f（x2）>0
∴ f（x1)>f（x2）
F (x) is a decreasing function