Modeling in MatLab

Question 1

y = [18 15 14 17 13 18 15]

y(5)=

Answer 1

13

Question 2

y = [18 15 14 17 13 18 15]

y(3:5)

Answer 2

14 17 13

Question 3

y = [18 15 14 17 13 18 15] 
b = y(2:3:7)

Answer 3

15 13

Question 4

z =
1
2
3
4
5

z’=

Answer 4

z= 1 2 3 4 5

Question 5

x = 0:2:7

Answer 5

x= 2 4 6

Question 6

x=1:5

Answer 6

x =1 2 3 4 5

Question 7

g = [2 3 4]
h = [-1 2 3]

g+h

Answer 7

1 5 7

Question 8

x= [1 2 3 4]
y= [1 2 3 4]

x*y=

Answer 8

Invalid

Question 9

x= [1 2 3]
y= [1; 2; 3]

x*y=

Answer 9

16

Question 10

x= [1 2 3]
y= [1; 2; 3]

x.*y=

Answer 10

ans = 1 3 9

Question 11

plot(t,empirical,’go–’)

what will appear as the options

Answer 11

green -o-

Question 12

In a function the file name and the function name must be

Answer 12

the same with the file name has .m

Question 13

Functions=

Scripts=

Answer 13

Functions perform calculations

Scripts Executes commands

Question 14

what are ODE45

Answer 14

a function with an initial conditon

Question 15

ODE stands for

Answer 15

Ordinary Differential

Equations

Question 16

Real-world systems are

Answer 16

dynamical systems

Question 17

What do you need for an ODE

Answer 17

the function ODE and the initial condition

Question 18

This is an ODE

[t,h]= ode45(‘sex’,[0 20],h0);

Answer 18

what is [t,h] returns a value

t as the specified range [0 20]

Question 19

This is an ODE
[t,h]= ode45(‘sex’,[0 20],h0);
what is sex

Answer 19

the name of the function describing the ODE problem

Question 20

This is an ODE
[t,h]= ode45(‘sex’,[0 20],h0);
[0 20] represents

Answer 20

the specified range for t on the x axis

Question 21

This is a script
h0=2000

[t,h]= ode45(‘sex’,[0 20],h0);

how can we rewrite this ode

Answer 21

replace h0 with 2000 as it represents the initial condition