问题及解答

增加了 ispolyn() 函数, 用于判断是否是多项式. 不过目前这个函数的功能比较弱. 建议输入多项式按照规则输入.

>> ispolyn(3+x^-3)
3
x^-3
It is a polynomial.
>> ispolyn(3^(9+2)x^3)
3^(9
2)x^3
It is a polynomial.
>> ispolyn(3^11x^3)
3^11x^3
It is a polynomial.
>>

上述问题已经解决

>> ispolyn(3*(9+2)x^-5)
33x^-5
It is a polynomial.
>> ispolyn(3*(9+2)x^(3+3))
33x^6
It is a polynomial.
>> ispolyn(3*(9+2)x^(3+2))
33x^5
It is a polynomial.