MATLAB Questions 1) The primary form of data in MATLAB is vectors. They can be o

Question

MATLAB Questions

1) The primary form of data in MATLAB is vectors. They can be one-dimensional (i.e., vectors), or two-dimensional (i.e., matrices).

a) Write the MATLAB code to create a 1x3 vector containing the elements [1,2,3]. Additionally, write the MATLAB code to create a 3x1 vector with the same elements.

b) Write the MATLAB code to create the vector [2,4,6,...,98,100] and store it in a variable named x(Hint: There is a shorthand notation for regularly spaced vectors).

c) Write the MATLAB code to create a 2x2 matrix containing the elements [1,2,3,4] (The order of the numbers do not matter).

2) MATLAB has several types of built-in math functions that can help you perform common operations.

            a) Write the MATLAB code that takes the absolute value of -134.

b) Write the MATLAB code that stores a number 3*pi in a variable named x, then takes the cosine of x.

c) Functions can also be applied to vectors. Assume you have a vector y, which contains the elements [4,9,16]. Write the MATLAB code to take the square root of y. What should the result be?

Explanation / Answer

1)

a) 1x3 vector containing the elements [1,2,3] => x=[1,2,3];

3x1 vector containing the elements [1,2,3] => x=[1;2;3];

b) x=2:2:100;

c) x=[1,2;3,4];

2)

a) x=abs(-134);

b) x=3*pi;

   y=cos(x);

c) y=[4,9,16];

x= sqrt(y);

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