引用的方法依赖于描述的三角恒等式此处用于求解三次方程。符号 ∏ 是大写的 π，或 Math.PI。
∏
π
Math.PI
另请参阅此示例，它使用org.jscience.mathematics.function.Polynomial并引用了一个方便的寻根算法。
org.jscience.mathematics.function.Polynomial
The approach cited relies on a trigonometric identity described here used to solve cubic equations. The symbol ∏ is a capital π, or Math.PI in Java.
See also this example that uses org.jscience.mathematics.function.Polynomial and references a convenient root-finding algorithm.
您正在寻找的方法称为符号编程。
然而，我不知道有任何稳定的 Java 库允许这种编程。
The approach that you are looking for is called Symbolic Programming.
I do not, however, know of any stable Java libraries which allow for such programming.
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引用的方法依赖于描述的三角恒等式此处用于求解三次方程。符号
∏是大写的π，或Math.PI。另请参阅此示例，它使用
org.jscience.mathematics.function.Polynomial并引用了一个方便的寻根算法。The approach cited relies on a trigonometric identity described here used to solve cubic equations. The symbol
∏is a capitalπ, orMath.PIin Java.See also this example that uses
org.jscience.mathematics.function.Polynomialand references a convenient root-finding algorithm.您正在寻找的方法称为符号编程。
然而，我不知道有任何稳定的 Java 库允许这种编程。
The approach that you are looking for is called Symbolic Programming.
I do not, however, know of any stable Java libraries which allow for such programming.