Invalid expression. When calling a function or indexing a variable, use parentheses. Otherwise, check for mismatched delimiters.

So I have an equation and I need to plot as a function of theta, but something isn't working

% Given
syms theta;
R = 20;
L = 80;
H = 38;
theta_1a = 104.720;

% Equation for the velocity of the slider
V_Ba = (theta_1a*R*((cos(theta)-sin(theta)*(H-R*cos(theta))/sqrt(L^2-(H-R*cos(theta))^2)));

% Plot V_B for t between 0 and 2*pi
fplot(V_Ba, [0, 2*pi], 'Linewidth',2)

IDK what's wrong(

Thank you in advance

Answer 1

[Setsuna Yuuki.]

you should add a parenthesis in V_Ba

% Given
syms theta;
R = 20;
L = 80;
H = 38;
theta_1a = 104.720;
% Equation for the velocity of the slider
V_Ba = (theta_1a*R*((cos(theta)-sin(theta)*(H-R*cos(theta))/sqrt(L^2-(H-R*cos(theta))^2)))); %% add one )
% Plot V_B for t between 0 and 2*pi
fplot(V_Ba, [0, 2*pi], 'Linewidth',2)

[Kseniia Kudriavtceva]

You just saved my life!

Thank you!