Variables Maple中索引变量的导数
考虑N个变量,x_1,x_2,x_N.给定iVariables Maple中索引变量的导数,variables,indexing,maple,differentiation,Variables,Indexing,Maple,Differentiation,考虑N个变量,x_1,x_2,x_N.给定i
restart;
with( Physics ):
Setup( metric = Euclidean ):
Define( x ):
f := diff( Sum( a[i] * x[i], i=1..N ), x[j] );
Simplify( eval( f, g_=KroneckerDelta ) ) assuming j >= 1 and j <= N; # returns a[j]