How can i remove "==" from symbolic equation?

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Volkan Yangin 2020-11-19

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https://ww2.mathworks.cn/matlabcentral/answers/653343-how-can-i-remove-from-symbolic-equation

评论： KSSV 2020-11-19

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Edit: I have solved my problem with rhs.

Hi,

I have created a symbolic equation via isolate command. Resulting equation is:

x1_dot == (1570*u)/41 - x3*x2_dot - (3060*x1)/(41*x3) - (6426*x2)/(1025*x3)
%Should be: x1_dot = (1570*u)/41 - x3*x2_dot - (3060*x1)/(41*x3) - (6426*x2)/(1025*x3)

I should remove logical equality to continue my work. How can i make this?

Thanks,

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Volkan Yangin 2020-11-19

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Actually, i asked the question uncorrect; i'm sorry.

I have defined an equation as eqn_1 and arranged it according to x1_dot via isolate command.

x1_dot=isolate(eqn_1,x1_dot)

I am using x1_dot in next steps. When i write x1_dot at command window, the result contains ==. This two equality symbol make my code wrong.

I wish, it may be clear. :)

Volkan Yangin 2020-11-19

编辑：Volkan Yangin 2020-11-19

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Haha i did it:

It seems very easy :))

x1_dot=rhs(isolate(eqn_1,x1_dot));

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KSSV 2020-11-19

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syms x1_dot u x2_dot x1 x2 x3

x1_dot = (1570*u)/41 - x3*x2_dot - (3060*x1)/(41*x3) - (6426*x2)/(1025*x3)

x1_dot =

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Volkan Yangin 2020-11-19

How can you get result as png format?

KSSV 2020-11-19

I don't think there is option of saving as image.....you can try in Live editor...and try to print the variable...it should be printed as shown in the answer...then you can save it as image I guess. Or there might be any other way which I am mot aware.

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