Use MATLAB to define: x= 1, 1.2, 1.4, …, 5 

 a. Compute the array y that results by applying the function: y= 7sin(3x) to every element in x. (1 point) 

 b. Determine how many elements y has; save the result in w1. (1 point) 

 c. Display the values of elements from 3 to 9 (inclusively) of y, and save the result in array w2. (1 point)

 3. Use MATLAB to generate: 

a. Array z1= sin(-pi/2) : 0.05: cos(0) using colon operator; then determine how many elements it contains and save the result in T1. (2 points)

 b. Array z2=[0 2 4 6 8; 1 3 5 7 9]using colon operator; then determine how many elements it contains and save the result in T2. (2 points)