use matlab to Plot the voltage gain of the RCL circuit when the capacitor and the inductor are in parallel in different frequency

Sure, here's some MATLAB code that will plot the voltage gain of an RCL circuit with a parallel capacitor and inductor:

R = 100;        % Resistance in ohms
L = 0.1e-3;     % Inductance in henries
C = 10e-9;      % Capacitance in farads

f0 = 1 / (2*pi*sqrt(L*C));   % Resonant frequency
f = logspace(1, 5, 1000);    % Frequency range to plot

% Calculate voltage gain
gain = 1 ./ sqrt(1 - (f./f0).^2);

% Plot results
semilogx(f, 20*log10(gain));
xlabel('Frequency (Hz)');
ylabel('Voltage gain (dB)');
title('Voltage gain of RCL circuit with parallel capacitor and inductor');
grid on;

This code sets the values of the resistance, inductance, and capacitance, and calculates the resonant frequency of the circuit. It then generates a range of frequencies to plot, and calculates the voltage gain at each frequency using the equation I provided earlier. Finally, it plots the results on a semilogarithmic scale, with frequency on the x-axis and voltage gain in decibels on the y-axis.

You can adjust the values of R, L, and C to see how they affect the shape of the voltage gain curve. Let me know if you have any questions!