chapter 8

Question 1

branching

Answer 1

executes list of statements based on logical expression

Question 2

binary operators

Answer 2

use parentheses to make order of operations more explicit

Question 3

any(x)

Answer 3

true if x is not zero

Question 4

isnan(x)

Answer 4

true if x is NaN

Question 5

isfinite(x)

Answer 5

true if x is finite

Question 6

isinf(x)

Answer 6

true if x is inf or -inf

Question 7

logical operators with arrays

Answer 7

element wise, returns array of 0s and 1d based on if it meets argument

Question 8

logical indexing

Answer 8

extract elements from array with logical array

Question 9

logical array

Answer 9

array of 1s and 0s based on if elements are T or F

Question 10

loops

Answer 10

execute statements between keywords repeatedly based on given conditions

Question 11

tic

Answer 11

starts internal timer

Question 12

toc

Answer 12

returns time in seconds since ic

Question 13

ones(n,m)

Answer 13

created array of specific size filled with ones

Question 14

zeros(n,m)

Answer 14

creates array of specific size filled with zeros

Question 15

local functions

Answer 15

functions only accessible in current script/workspace, defined after main function

Question 16

function handles

Answer 16

specific class of variable that is pointer to other functions @

Question 17

pointer

Answer 17

variable that points to location in memory

Question 18

function handle structure

Answer 18

funHandle = @functionName

you assign the function with a new name that can be referred to later in the code with the feval function.

Question 19

feval example

Answer 19

[y2, y1] = feval(funHandle, x1, x2)

evaluates functions using x1 and x2 as inputs to funHandle

Question 20

scope

Answer 20

parts of program that access variables value

Question 21

nested function

Answer 21

function within another function, shares space with the parent function