Elaborar un script en Matlab

1. Write a code which takes a variable x and returns the value of 2x. Make sure that your code works for variables which are scalars, vectors and matrices.

clc; clear all; close all;

N=input('introduzca x: ');

 x=N;

 N=2^x

1. Write a code that plots the function

y = 9 − x for x ∈ [−2, 2] in steps of 1/10

close all; clear all; clc;

x=-2:1:2;

x=-2:2

y= 9-x

1. Write a code that perform the sum

i=1n1i+1(i+2)(i+3)

          where the user inputs N.

clear all; close all; clc;

    N= input('N');

suma= 0

for i=1:N

    suma=suma+(1/i)+(i/((i+2)*(i+3)));

end

disp(suma);

1. Construct a code which converts a speed in miles per hour to kilometres per hour.

clear all; close all; clc;

   mph=1;

   km=0;

   kmph=mph*1.609;

   n=input('ingrese millas ');

       km=n*kmph

1. Rewrite your code from part (4) so that it is now a function that takes a single input, the speed in miles per hour, and returns a single output, the speed in kilometres per hour.

function km=conversion(kmph)

   mph=1;

   km=0;

   kmph=mph*1.609;

   n=input('ingrese millas ');

       km=n*kmph

end