Homework 4

Question 1

sum()

Answer 1

finds sum of formula or all values in matrix

Question 2

max()

Answer 2

finds the max value in the data provided

Question 3

min()

Answer 3

finds the min value in the data provided

Question 4

find()=[x,y]

Answer 4

finds whatever value inputted and returns the [x,y] coordinates of that data

Question 5

sort(matrix, [ascend or descend])

Answer 5

sorts matrices in ascending or descending order

Question 6

Linear equation(A^-1 * b=x)

Answer 6

[rows, cols] = size(data)
A = data(:,cols-1)
b = data(:, last col)
inv(A)*b=solution
(if det(A)=0 - it is not solveable)