The box in the circuit in Figure \(\mathrm{P}_{2}-5 \underline{8}\) is a resistor, \(R_{\mathrm{X}}\), whose value can be anywhere between \(100 \Omega\) and \(1 \mathrm{M} \Omega\).

(a) Use circuit reduction to find the range of values of \(v_{\mathrm{X}}\).

(b) Use Multisim's "Parameter Sweep" analysis to show the variation of the output \(v_{\mathrm{X}}\) with respect to \(R_{\mathrm{X}}\).

(c) Use the results and the cursor to find the value of \(R_{\mathrm{X}}\) that yields a \(v_{\mathrm{X}}\) of \(10 \mathrm{~V}\). Repeat for \(5 \mathrm{~V}\) and again for \(2.5 \mathrm{~V}\).