Question

Write a MATLAB code to obtain the following. Keep your code commented whenever required. Copy your source code and command widow outcomes and screen shots of any plots in your solution.

Write a user defined function ‘My_FunctionGen’. It accepts, the time vector ‘t’ with 8000 uniformly spaced values within the range of 0 to 8, Frequecy scalars ‘f1<100H’ and ‘f2<80Hz’ and Amplitude scalars ‘A1’, ‘A2’ and ‘A3’ as input arguments. It delivers x1, x2 and x3 and x4 as outputs and also generates plots, as shown in the following table. Where, x1, x2, x3 and x4 are defined as.

• x1= (A1+A2).cos(2πf1t)
• x2= A2.cos(2πf2t)
• x3= A3 times of a random vector of a similar length as that of vector ‘t’
• x4= Element by element division between x1 and x2

• Open Figure#8, split this figure as shown below and draw:

Plot vector ‘x1’ against vector ‘t’ in blue color. (Row 1, Column 1)

Plot vector ‘x2’ against vector ‘t’ in red color. (Row 1, Column 2)

Plot vector ‘x3’ against vector ‘t’ in cyan color. (Row 2, Column 1)

Plot vector ‘x4’ against vector ‘t’ in green color. (Row 2, Column 2)

[Superposition of data plots] Plot vector ‘x4’ against vector ‘t’ in magenta color. Plot vector ‘x3’ against vector ‘t’ in black color. Plot vector ‘x2’ against vector ‘t’ in blue color. (Row 3, Column 2)

• Use axis function to properly display each plot. Also add, x-axis label, y-axis label, Title and Legend to these plots.
• Write an appropriate MATLAB code to call and test this function.

Answer 1

Here I took 80 spaces between 0 to 8 instead of 8000 for the clear view of plots.