(a) With reference to the Class AB circuit of suppose the currents I1 and I2 are perfectly matched, whereas the saturation currents Is1, Is2, Is3, and Is4 of the BJTs are affl icted by a 610%...

(a) With reference to the Class AB circuit of suppose the currents I1 and I2 are perfectly matched, whereas the saturation currents Is1, Is2, Is3, and Is4 of the BJTs are affl icted by a 610% tolerance each. Find the worstcase voltage VOS that we need to apply at the input in order to drive vO to zero. (b) Repeat, but for the case in which the saturation currents are perfectly matched, whereas I1 and I2 are affl icted by a 610% tolerance.