Unrecognized variable Using solve command

3 次查看（过去 30 天）
Sarah Alhabbas
Sarah Alhabbas 2022-6-11
评论： Walter Roberson 2022-6-11
It keeps giving “unrecognized function or variable ‘theta’

请先登录，再回答此问题。

回答（1 个）

Star Strider
Star Strider 2022-6-11
Perhaps:
syms theta
just after the ‘outputs’ comment would help.
Also MATLAB is case-sensitive, so change:
Angle = 10;
to:
angle = 10;
The vpa.function could also be helpful.
.
  1 个评论
Walter Roberson
Walter Roberson 2022-6-11
if theta is symbolic and angle is numeric then assignment to
Eq340(theta, angle)
would be an error.
I say that you should
syms theta angle
and change the Angle in Eq340 to angle
After that the last statement would become
theta = subs(S, angle, Angle)
Question: are you sure that you want to be working with 10 radians? It looks to me more likely that you should be using sind(angle) instead of sin(angle)

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Assumptions 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