RESOLUCION PRÁCTICA DIRIGIDA

1……………………………

>> a=5,b=2

>> sqrt(a^2+b^2+2*a*b*cos((37*pi)/180))

ans =

6.7062

2. ……………………………………….

>> r=2.62

r =

2.6200

>> (4/3)*pi*r^3

ans =

75.3343

3. …………………………………………

>> A=[1,1;1,3]

A =

1 1

1 3

>> A^4

ans =

20 48

48 116

4. …………………………………………

>> A=[2 0;0 2],B=[-2 -5;4 1]

A = 2 0

0 2

B = -2 -5

4 1

>> A*B

ans =

-4 -10

8 2

>> B*A

ans =

-4 -10

8 2

>> A+B

ans =

0 -5

4 3

>> B+A

ans =

0 -5

4 3

1

5. ………………

>> A=1+3i,B=3+5i,C=6+8i

A =

1.0000 + 3.0000i

B =

3.0000 + 5.0000i

C =

6.0000 + 8.0000i

>> A+B+C

ans =

10.0000 +16.0000i

6………………………….

>> E=((4/3+3)/(7/5-2/5))

E =

4.3333

7………………………

x =

2.5000

>> Y=3*x^4-7*x^3+2*x^2+x+1

Y =

23.8125

8………………………………

A=[3 2 -4;2 -2 5;4 3 -4]

A =

3 2 -4

2 -2 5

4 3 -4

>> B=[12;10;18]

B =

12

10

18

>> A\B

ans =

4.1905

1.8095

1.0476

9……………………………………

>> x=linspace(0,2*pi,20);

>> y=sin(x)+2;

>> plot(x,y)

2

10……………………………………

v>> x=linspace(0,2*pi,20);

>> y=sin(x)+2;

>> plot(x,y)

>> plot(x,y,'blue')

>> title('sen (x)+2')

11………………………………..

>> y=[5 0 2 0 3 0]

y =

5 0 2 0 3 0

>> r=roots(y)

r =

0

-0.5360 + 0.6981i

-0.5360 - 0.6981i

0.5360 + 0.6981i

0.5360 - 0.6981i

3

PRACTICA DOMICILIARIA

1……………………………………

a=8+6i

a =

8.0000 + 6.0000i

>> k=3*sqrt(2);

>> b=k+k*i;

>> c=12+16i;

>> r=a+b+c

r =

24.2426 +26.2426i

>> abs(r)

ans =

35.7265

2…………………………….

>> r=2.76

r =

2.7600

>> S=4*pi*r^2

S =

95.7256

3……………………………..

>> a=sqrt((8^2+4^2-(2*4*8*cos(30*pi/180))))

a =4.9573

>> x=(4*sin(30*pi/180))/a

x =0.4034

>> asin(x)

ans =

0.4153

>> (asin(x))/pi*180

ans =

23.7940

4………………………………….

>> A=[2 3;4 5]

A =

2 3

4 5

>> B=[2 0;1 2]

B =

2 0

1 2

>> C=A+(3*B)

4

C =

8 3

7 11

6……………………………………………..

>> ((4/3+3)/(7/5-2/5))+(4/5)

ans =

5.1333

7………………………………

>> x=-1.2

x =

-1.2000

>> y=4*x^4-2*x^3+2*x^2+5*x+1

y =

9.6304

8………………………………..

>> A=[1 1 -1;1 -1 1;1 1 -2]

A =

1 1 -1

1 -1 1

1 1 -2

>> B=[1;1;0]

B =

1

1

0

>> A\B

ans =

1

1

1

9…………………………………….

>> x=linspace(0,2*pi,20);

y=sin(x)+2;

plot(x,y)

>>

>> x=linspace(0,pi,200);

>> y=cos(x)-1;

>> plot(x,y)

5

10………………………………….

>> a=[5 0 2 0 3 0]

a =

5 0 2 0 3 0

>> r=roots(a)

r =

0

-0.5360 + 0.6981i

-0.5360 - 0.6981i

0.5360 + 0.6981i

0.5360 - 0.6981i

6