如何用C编写程序来对包含2个变量的代数表达式进行操作？ [英] How to write a program in C to do operations on algebraic expression containing 2 variables?

问题描述

如何在C中添加或减去2个具有2个变量的代数表达式。我意识到它可以使用矩阵完成，但会留下许多空格。任何人都可以写一个动态分配数组的程序。如何处理稀疏矩阵（数组表示）

示例问题：

P1（x，y）= 5x ^ 2y + 9x ^ 3y ^ 2

P2（x，y）= 9x ^ 3y ^ 2 + 12y ^ 2 + 10x ^ 4



我尝试过：



我试图通常在C中使用矩阵但我的教授放弃它，因为它创造了太多不必要的内存

解决方案

抱歉，我们不会为您做功课。

您不需要使用矩阵。只需使用一组结构，每个结构包含：

• 系数
  
  
• x的功率
  
  
• y的力量

并对类似功率组合的系数求和。



/ ravi

How can I add or subtract 2 Algebraic expressions in C which have 2 variables. I realize it could be done using matrix but that would leave many null spaces. Can anyone please write a program dynamically allocating the arrays. How can I do with sparse matrix (array representation)
Example question:
P1(x,y) = 5x^2y + 9x^3y^2
P2(x,y) = 9x^3y^2 + 12y^2 + 10x^4

What I have tried:

I have tried to do it normally using matrix in C but my professor discarded it as it was creating too much unnecessary memory

解决方案

Sorry, we do not do your homework for you.

You don't need to use a matrix. Simply use a collection of structures, each of which contains:

• coefficient
  
• power of x
  
• power of y

and sum the coefficients of like power combinations.

/ravi

这篇关于如何用C编写程序来对包含2个变量的代数表达式进行操作？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！