This is important. Please don$$t delete it and provide me the correct equation step by step. This equation is very important to me$,$ so ensure there are no mistakes. I need $100\%$ accuracy.

$[$Part$-$A$]$

Say, the rotor $($mechanical part of the motor$)$ is locked in place while a voltage is being applied

to the motor input. In this case, the equivalent circuit does not have any mechanical part and is

reduced to the following RL circuit. This experiment is called the blocked rotor test.

The frequency response of the conductance $($ G$=|$I$\_($a$)|//|$V$\_($a$)|)$ of the system was tested. The

measured data of G $[$unit: $1//$Omega$]$ at various frequencies f$[$ unit: Hz$]$ are given in the spreadsheet.

The goal is to find the circuit parameters: R$,$L using the given data.

$(1)$ Rewrite the equation to convert the problem into a polynomial Least Square regression

$($LS curve fitting$)$ problem. $[$Hint: how many unknowns are there? What could be the

order of your polynomial?$]$