LAB 1-5

Question 1

divide 144over12

Answer 1

144/12

Question 2

devide 12 over 144 in two ways

Answer 2

12/144 or 144\12

Question 3

the square root of a

Answer 3

sqrt(a)

Question 4

output 1+8i

Answer 4

1+8j

Question 5

find the absolute value of a

Answer 5

abs(a)

Question 6

find the angle of a in degree

Answer 6

angle(a)

ans*180/pi

Question 7

find the conjunction of a

Answer 7

conj(a)

Question 8

find the imaginary part of a

Answer 8

imag(a)

Question 9

out out the numbers from 1 to 4

Answer 9

1:4

Question 10

output the odd numbers from 1 to 8

Answer 10

1:2:8

Question 11

if g=1:4

output the numbers vertically

Answer 11

g(:)

Question 12

from g=1:4

find the maximum value

Answer 12

max(g)

Question 13

from g=1:4

find the minimum value

Answer 13

min(g)

Question 14

from g=1:4

find the third value

Answer 14

g(3)

Question 15

list the following numbers 1,5,9,3

Answer 15

h=[1 5 9 3]

Question 16

how to show the following

Answer 16

subplot(2,1,1)

Question 17

how to show the following

Answer 17

subplot(2,1,2)

Question 18

round to the nearest integer toward zero

Answer 18

fix(a)

Question 19

round to the nearest less than or equal to that element

Answer 19

floor(a)

Question 20

round to the nearest integer greater than or equal to that element

Answer 20

ceil(a)

Question 21

round to the nearest integer

Answer 21

round(a)

Question 22

10^? = 100

Answer 22

log10(100)

Question 23

find the exponential of a number

Answer 23

exp(a)

Question 24

2 to the power of 3

Answer 24

2^3

Question 25

output the matrix

Answer 25

[16 3 2;5 10 11]

Question 26

add the rows of the matrix

Answer 26

sum(a)

Question 27

rotate the matrix rows and columns

Answer 27

b=a'

Question 28

show the values diagonally

Answer 28

diag(a)

Question 29

flip the matrix left to right

Answer 29

fliplr(a)

Question 30

extract the value in the 3rd row and second column

Answer 30

a(3,2)

Question 31

extract the fourth value

Answer 31

a(4)

Question 32

change the number in the second row and second column to 22

Answer 32

a(2,2)=22

Question 33

find the number of rows and columns in the matrix

Answer 33

size(a) [o,r]=size(a)

Question 34

display numbers from 100 to 50 subtracting 7 going down to 50

Answer 34

[100:-7:50]

Question 35

how to plot a graph on another graph

Answer 35

hold on

Question 36

Answer 36

subplot(1,2,2)

Question 37

Answer 37

subplot(2,2,1) subplot(2,2,2) subplot(2,2,3)

Question 38

show the grid on the graph

Answer 38

grid on

Question 39

plot in 3d

Answer 39

plot3(a,b,c)

Question 40

draw a 3d graph with color

Answer 40

[t]=meshgrid(0:pi/100:2\*pi) mesh(y,yl,t)