Write code in MATLAB please

3. Run the command testvec rand (1000, 1);" This will create a vector with 1000 randon numbers (between 0 and 1). Write a function that takes in this vector and returns the smallest element. You can use the built-in function min) to check your work, but don't call min) in your function. Now, run the command testMat rand (1000,1000);. This creates a 1000x1000 matrix full of random numbers. Write a function that takes in this matrix and returns the smallest element. 5. Write a function like in Exercise 4, but this time make it so it can find the smallest element in a matrix of any size. Hint: look up help on the built-in function size)