MATLAB: Plot on the same figure

equationMATLABplottingsymbolicSymbolic Math Toolbox

MATLAB commands to plot, on the same figure

f=3*(t^2) + 2*t – 0.5

g=2*t*(cos(t))

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syms t
f=3*(t^2) + 2*t - 0.5
g=2*t*(cos(t))
fplot({f,g})

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MATLAB: Figure

plot(randn(100,1));
hold on;
h = plot(5,3.5,'k*');
%%%then
reset(h)

MATLAB: Function ‘subs’ different output for a (similar?) input

Hi Bobby,

syms F(t)

The above command implies that 'F' is a symbolic function. Hence, the command

invF0=subs(invF(t))

does not give error.

However, 't' is defined as a symbolic variable, and so, 'DexpAt' is also a symbolic variable. As variables cannot take any input arguments, the below command gives an error.

DexpA0=subs(DexpAt(t))

For the above command to run without any error, you can define 'DexpAt' also as a symbolic function by changing

DexpAt=diff(expAt)

DexpAt(t)=diff(expAt)

You can check your workspace to confirm if any symbol is a symbolic function or a symbolic variable.

For additional information on symbolic variables and functions, refer to the following link:

Create symbolic variables and functions - MATLAB syms (mathworks.com)

Regards,

Divija

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MATLAB: Figure

MATLAB: Function ‘subs’ different output for a (similar?) input

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