建模第一次作业--编程组

时间：2021-02-05 16:45:51
1·syms x y,x=2,y=x^3+(x-0.98)^2/(x+1.25)^3-5*(x+1/x)

x =

     2


y =

   -4.4697

>> syms x y,x=4,y=x^3+(x-0.98)^2/(x+1.25)^3-5*(x+1/x)

x =

     4


y =

   42.8130
2·cos(60*pi/180)-(9-2^0.5)^(1/3)

ans =

   -1.4649
3·a=3;
>> A=4;
>> b=a^2;
>> B=b^2-1;
 c = a + A - 2*B;
>> C=a+B+2*c;
C =

  -223

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