For the op-amp circuit, shown in figure (1): . find expressions for the op-amp output voltage (vo) and the load current (i), as functions of vs and the resistors network, assuming that the total load resistance is equal to r ·find an expression for the range of rl for linear operation. r2 9v vo v+ r3 rl1rl(rl1+rl2) 9v rl1 rl2 vl il figure (1) task (2): setting v,1.5 v, choosing proper values for the resistors ri -r3, and using a potentiometer for r2, simulate the design of task (1) using parameter sweep analysis (both r2 and r) to obtain the following currents for the specified range of the load: 3 ma 3ma 8 ma, when 100 ω rl 200 ω, and . i1s8ma, when i kf2 rl 2k2, and . is constant for a given value of r2 for the whole range of rl and that il s hint: prove that a linear function of r2 with no saturation. try to change either vcc or v in case you can't avoid saturation. task (3): using a small-size breadboard, an op-amp, 9-v batteries, and a combination of resistors, build a circuit that corresponds to the one, shown in figure (1). use the components, exemplified in figure (2) and carefully label all of them, along with all the nodes of the circuit. test your circuit and compare your results to that of task (2). figure (2) task (4): replace r in the circuit with a capacitor of a proper value and prove that the new circuit is acting as an integrator. validate your answer, both via simulation and practical measurements, using a square wave for v and proving that the op-amp output is a triangular wave