MATLAB: I could use some help entering this formula into matlab.

formulafrequencyplotplotting

f is logspace(a,b)… while r l and c are user input constants. I need to plot it using loglog, but I can't find an explanation on how to correctly enter the syntax of the formula, could someone please point me in the right direction? It would be greatly appreciated! Can it be done with one line as magnitude = sqrt( )?

Best Answer

magnitude = sqrt(R.^2 + (2*pi*f*L - 1./(2*pi*f*C)).^2);

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Please help me with the algorithm of the formula in the attached file................

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There are two ways.

1. use fplot

syms   f
% Physical properties of the bar

V0 = 1;
R = 1000;
L = 470*10^(-6);
C = 120*10^(-12);
Rv(f) = (V0*R)/sqrt(R^(2)+(2*pi*f*L-1/(2*pi*f*C))^(2));
theta(f) = atan(((1/(2*pi*f*C))-2*pi*f*L)/R);
x1 = 0:1000:4000000;
% Calculate the inital distribution (almost)

fplot(Rv(f), [0 4000000])
xlabel('x');
grid on
grid minor
pause(0.01)

2. using function handle

syms   f
% Physical properties of the bar
V0 = 1;
R = 1000;
L = 470*10^(-6);
C = 120*10^(-12);
Rv(f) = (V0*R)/sqrt(R^(2)+(2*pi*f*L-1/(2*pi*f*C))^(2));
theta(f) = atan(((1/(2*pi*f*C))-2*pi*f*L)/R);
x1 = 0:1000:4000000;
Rvf = matlabFunction(Rv);
% Calculate the inital distribution (almost)
plot(x1,Rvf(x1))
xlabel('x');
grid on
grid minor
pause(0.01)

Best Answer

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