# Solve 2 equations

When you try to solve 2 equations, there are often multiple ways to approach it.

## Solving 2 equations

Teacher: your answer is correct; We know that the abscissa of the intersection of the image and the X axis is the root of the equation, so we can tell the two roots of the equation by looking at the image. Now let's answer question (2). If the system of equations contains three unknowns, the number of terms containing unknowns in each equation is one, and there are two or more equations in the system of equations, such a system of equations is called a ternary system of first-order equations. Secondly, the two equal quantities in the chapter of the proportional equation remain unchanged, so they are regarded as equal quantities of the column equation. Only the left and right sides of the equal sign need to be calculated according to the same amount to meet the requirements of the inverse proportional equation. For example, AB, a obtains that the distance between B and ground is 500m, so using this series of proportional equations and the left side of the equations, the speed of going times the time of going is equal to the speed of returning times the time of returning. Wang Yi pointed out that China believes that great power competition is not the theme of the times, and zero sum game is not the right choice. In an era of interdependence and globalization, how China and the United States can find the right way to get along is not only an issue that human society has never encountered, but also an equation that the two countries must solve together. The above formula is the famous Einstein mass energy equation. It links mass and energy, two physical quantities that have met since ancient times. This breakthrough conclusion has opened up a Xintiandi of science and technology. First of all, to solve the practical problem of inverse proportion, we should learn to judge whether the relationship between the two related quantities in the question is a certain product. For example, the common speed times time equals the distance (certain), the number of apples per basket times the width equals the total weight of apples (certain), etc. as long as the product of the two quantities is certain, the inverse proportion equation can be listed by the inverse proportion relationship. It is easy to prove that the wave function in the variable separation form used above is the common eigenstate of the Hamiltonian of the moving part of the center of mass and the Hamiltonian of the relative moving part. Zhang Chaoyang proved that in the case of non degeneracy, two commutative operators have a common eigenstate. On the contrary, if the common eigenstates of the two operators can form a complete basis of the Hilbert space, then they are commutative. From this, it can be concluded that the Hamiltonian operator of the center of mass motion and the Hamiltonian operator of the relative motion are commutative, which indicates that if we want to solve the eigenequation of the Hamiltonian operator by the method of separating variables, we need to decompose the Hamiltonian operator into reciprocal operators, and solve the eigenequation of the original Hamiltonian by solving the simple eigenequations of these reciprocal operators, which is exactly the method we use to solve the Schrodinger equation of the steady state of the hydrogen atom. (1) Definition: there are two unknowns, the number of terms containing each unknowns is 1, and there are two equations in total. Such a system of equations is called a binary system of first-order equations. Further, the solution of the equation is obtained by the direct flattening method. If the right side is a non negative number, the equation has two real roots; If the right side is a negative number, then the equation has a pair of conjugate imaginary roots. Next, the wave function is written in the form of variable separation and substituted into the eigenequation of the Hamiltonian operator, which can be decomposed into two independent equations, one of which is the eigenequation of the moving part of the center of mass and the other is the eigenequation of the relative moving part. The decomposed eigenequation has only one variable, which is equivalent to converting the original complex two body problem into a simple single body problem, and then the eigenstates and eigenvalues can be solved

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