Step 1.9 Using the MatLab code in step 1.8, modify the following:

(1) s(t) = s=A1*sin((2*pi*f1*t)+sphase) = 3sin(2300t + /2)

(2) b(t) = b=A2*cos((2*pi*f2*t)+bphase) = 1cos(2150t + 0)

Question 1. Select the best answer regarding your observation from step 1.9.

a. both s and b appear as identical sine waves

b. both s and b appear as identical cosine waves

c. both s and b have different amplitudes and frequencies

d. both amplitudes are equal; the frequency of s(t) is double the frequency of b(t)