Variable q5 must be of size [1 2]. It is currently of size [1 1]. Check where the variable is assigned a value.

12 次查看（过去 30 天）
lateef
lateef 2024-3-14
编辑： Torsten 2024-3-14
syms x y
f(x,y)=x-x*y^2+sqrt(y);
u=[2,9];
q5=dot(u/norm(u),jacobian(f(x,y),[x,y]));

请先登录，再回答此问题。

回答（1 个）

Walter Roberson
Walter Roberson 2024-3-14
Ran in:
syms x y
f(x,y)=x-x*y^2+sqrt(y);
u = sym([2,9]);
part1 = u/norm(u)
part1 = 
part2 = jacobian(f(x,y),[x,y])
part2 = 
q5 = dot(part1, part2)
q5 = 
You have the dot product of a 1 x 2 and a 1 x 2. The result is going to be 1 x 1. You should not expect anything different for that set of equations.
  6 个评论
显示 4更早的评论

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Programming 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by