12. You plot the current-voltage characteristics of a new non-ohmic device, perform a curve fit, and discover the current as a function of voltage is given by the equation: I = (5 Amp/volt3) V3 - (9Amp/volt) V (a). Perform calculations to find the slope of a line tangent to this curve when V = 3.60 volts. (b). Calculate the effective resistance of this device when V = 3.60 volts. This device is Non-Ohmic