Do not use solve in matlab code

Problem has to be done only using student version of matlab

9. A series RLC circuit with an AC voltage source is shown. The amplitude of the cur- rent, I, in this circuit is given by: where ?,-2T/d in which fa is the driving frequency; R and Care the resistance of the resistor and capacitance of the capacitor, respectively; and vm is the ampli- tude of For the circuit in the figure R 80? C 18x10-6F, L = 260 x 10-3 H, and I'm = 10 V. Determine fa for which 1=0.1 A. (There are two solutions.)