solve 2 equations with two sympolic variables

1 回表示 (過去 30 日間)
Adham Ahmed
Adham Ahmed 2023 年 2 月 24 日
コメント済み: Walter Roberson 2023 年 2 月 24 日
I want solve these equations with the same variables U10 and U20 because they are part of other code
2*U20 + sin(U20)
2*U10 + sin(U10 - 1) - 2

回答 (1 件)

Walter Roberson
Walter Roberson 2023 年 2 月 24 日
Those are independent equations. Over the reals they have one solution each. U20=0, U10=1
  3 件のコメント
Askic V
Askic V 2023 年 2 月 24 日
First of all those are NOT equations. The equation can be for example: 2*U20 + sin(U20) = 0
We can assume that you mean that both expressions are equal to zero.
If that is the case, the code is very simple:
syms U20
f = solve(2*U20 + sin(U20), U20)
Warning: Unable to solve symbolically. Returning a numeric solution using vpasolve.
f = 
0
So the solution is zero, just like Walter told you.
Walter Roberson
Walter Roberson 2023 年 2 月 24 日
syms U20
f = (2*U20 + sin(U20))
f = 
fplot(f, [-pi pi]); xline(0); yline(0)
Exactly 0.

サインインしてコメントする。

カテゴリ

Help Center および File ExchangeCalculus についてさらに検索

タグ

Community Treasure Hunt

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

Start Hunting!

Translated by