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Eliminate

Usage

Eliminate[eqns, vars]用来消掉一个联立方程组中的变量.


Notes

• 方程以 lhs Equal rhs. 的形式给出.
• 联立方程要么被组合在一个列表中,要么和&&一起被组合.
• 能够确定一个单独的变量或一个变量列表. • 例如: Eliminate[ x Equal 2 + y, y Equal z , y]LongRightArrow .
• 变量可以是任意表达式. • Eliminate主要对线性和多项式方程起作用.
• 参见 Mathematica 全书: 1.5.7节3.4.8节.
• 同时参见:Reduce, SolveAlways, Solve, GroebnerBasis.
Further Examples

The variable specified in the second argument is eliminated from the system of equations.

In[1]:=  

Out[1]=

For readability, a warning message is temporarily turned off and then turned back on later.

In[2]:=  

Eliminate also attempts to remove variables that appear in transcendental equations.

In[3]:=  

Out[3]=

In[4]:=  

Out[4]=

In[5]:=  

Out[5]=

In[6]:=  

See the Further Examples for Solve. 参见 Solve. 的进一步实例