7-1  symʹ÷
⣺Enterȷϡ
>>  sqrt(3)
ans =
    1.7321
>>  a=sqrt(sym(3))
 a =
 3^(1/2)
>>  double(a)
ans =
    1.7321
>> sym(3)/sym(5)
ans =
 3/5
>> 3/5+1/3
ans =
    0.9333
>> sym(3)/sym(5)+sym(1)/sym(3)
ans =
 14/15
>>
