chapter 10

Question 1

2D array / matrix

Answer 1

elements in rows and columns

Question 2

creating a matrix

Answer 2

[[row1] ; [row2]]
separate rows by semicolons

Question 3

indexing with coordinate

Answer 3

temps(row, column) = 75

Question 4

row-column indexing

Answer 4

conventional approach, uses indices to index

Question 5

linear indexing

Answer 5

single index used to refer to array element

Question 6

equation for linear indexing

Answer 6

m*(y-1) + x

for spot (x,y) and a total of m rows in the matrix

Question 7

out of range indices

Answer 7

only resizable with row column indexing, otherwise error

Question 8

integer indexing array

Answer 8

section of numbers used to index an array

Question 9

indexing with array

Answer 9

weight(1, [1, 2, 3])

Question 10

integer indexing

Answer 10

weight(1, 1:3)

Question 11

linear indexing

Answer 11

weight([3, 4, 5])

Question 12

flattening an array

Answer 12

unwinding a 2D array into column
sampleMatrix(:)

Question 13

array reshaping

Answer 13

make 1D array into 2D

Question 14

sampleMatrix(:) = 1

Answer 14

makes all the elements 1

Question 15

sampleMatrix(:, 2) = [ ]

Answer 15

deletes column 2

Question 16

ciel(x)

Answer 16

rounds up to nearest integer greater than or equal to x

Question 17

floor(x)

Answer 17

round down to nearest integer less than or equal to x

Question 18

fix(x)

Answer 18

round to nearest 0

Question 19

round(x)

Answer 19

round to nearest integer (up or down)