무제

2029 days 전, nam2859 작성

var('x, y') f(x, y)=x/y fx(x, y)=diff(f(x, y), x);fy(x, y)=diff(f(x, y), y) print fx(x, y) print fy(x, y) 
       
1/y
-x/y^2
1/y
-x/y^2
 
       
var('x, y') f(x, y)=x/(x+y)^2 fx(x, y)=diff(f(x, y), x);fy(x, y)=diff(f(x, y), y) print fx(x, y) print fy(x, y) 
       
1/(x + y)^2 - 2*x/(x + y)^3
-2*x/(x + y)^3
1/(x + y)^2 - 2*x/(x + y)^3
-2*x/(x + y)^3