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The Best Precalculus help
Precalculus help can support pupils to understand the material and improve their grades. Therefore, if we encounter high-order equations in the exam, our goal is to decompose the high-order equations into low-order equations to solve them. The low-order equations mentioned here refer to primary and secondary equations. When designing questions, we usually make the coefficients special. For example, consider equations Just as the quadratic equation has a discriminant that can help us judge the root, looking at the above solving process, we can actually get the discriminant of the cubic equation and the quartic equation to judge the root However, these contents have nothing to do with the theme of this article, so we will not elaborate on them. Interested readers can find relevant materials to read So far, we have talked about the theory of solving low-order equations in history.
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if we encounter slightly more complex ones, we will not solve them, such as Riccati equation. When it comes to the second-order differential equation, there are fewer equations that can be solved, and many special functions are defined by the solution of the second-order differential equation, such as hypergeometric functions, Legendre functions, Bessel functions, Airy functions... We mentioned earlier that K (s, t) in the integral equation is the kernel function of the integral equation, so we guess that the difficulty of solving the integral equation is probably related to this kernel, and the more special the kernel, the easier it will be. In this section, I will begin to introduce the solution of Fredholm equation of the second kind.
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Song, but I don't know when my Liu Jun will appear? The teacher who taught us algebra was Mr. Yang Wanlong, who was also our head teacher in grade one. Mr. Yang is honest and honest, not good at talking, which is very consistent with the image of the algebra teacher. At that time, I was the representative of the math department in the class.
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