4. A power supply delivers a voltage signal that consists of an alternating Assessment as learning Chapter 4 MCV4U current (AC) component and a direct current (DC) component. Where 1. Differentiate with respect to x. * is the time, in seconds, the voltage, in volts, at time : is given by the a) y = cosx - sinx function V(t) = $sint + 12. b) y = sinx + 2cosx a) Find the maximum and minimum voltages. At which times do these () y=x - 3sinx values occur? d) y = Rcosx + 2x + 2xsinx b) Determine the period, T, in seconds, frequency, f, in hertz, and e) y = 5sinx - 5x3+2 amplitude, A, in volts, for this signal. f) y = cosx + 7xsinx - 3x 2. Find the equation of the line tangent to the function y = -4sinx at x = = Find each derivative with respect to x. 3. a) y = sin x =cos x d f(x) = cos x - sin'x d) f(x) = 2cos'x +cos* x Page 2 of 3