# How to solve using quadratic formula

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In this blog post, we will take a look at How to solve using quadratic formula. Many linear algebra books think that it is more suitable for computers to solve the inverse of a matrix, because it involves less algebraic operations, but it may not be effective for matrices in 3D. Cramer's rule is a method for solving linear equations. The solution of the unknown in the i-th column is the determinant of the replacement matrix generated by replacing the i-th column of the coefficient matrix with the constant column, divided by the number obtained by the determinant of the original matrix. In the operation of matrix data, STL or a third-party library are generally not used, but data pointers are directly used.

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Because it is a wave equation, the solution must be an expression related to X and T, so it can not be a single variable first-order function. With this clear, we can solve the secondary equation. (2) Process knowledge. Describe the process of doing something so that people or computers can follow it. The standard program is generally compiled according to the solution process of the model, reflecting the steps of solution.

But now, parents with higher education have a headache when tutoring homework. Can't even solve primary school math problems after graduation from university? And the students also said that the math questions in the college entrance examination were very simple, and they believed that all students could get full marks. The students said this lightly, but we in front of the screen are really trembling. Is this something we can say casually? Don't make mathematics seem very simple.

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