syms x y
y=(4*x^2-2*x-5)*(1+1/x^2)^5;
y=collect(y)
y =
4*x^2+15+15/x^2-10/x^4-30/x^6-21/x^8-2*x-10/x-20/x^3-20/x^5-10/x^7-2/x^9-5/x^10
常数项为15.
syms x y
y=(4*x^2-2*x-5)*(1+1/x^2)^5;
y=collect(y)
y =
4*x^2+15+15/x^2-10/x^4-30/x^6-21/x^8-2*x-10/x-20/x^3-20/x^5-10/x^7-2/x^9-5/x^10
常数项为15.