Explore BrainMass
Share

Explore BrainMass

    Matlab codes

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    Simple matlab questions need solved, given step by step answers as how the code flows, works, etc to get the answers.

    1) Which is the correct matlab logical expression to check whether the value of x is between -10 and 10 (inclusive)?

    a) -10 <= x <=10
    b) -10<= x, X <= 10
    c) x>=-10 & X<=10
    d) x>=-10| x<=10
    e) none

    10) Assuming that x is a vector that allready exists, what is the value of y after the following code is executed?

    y = x(1);
    for k=2:length(x)
    if x(k) >y
    y=x(k);
    end
    end

    a) the last element in x
    b) the first elemtn in x
    c) the max element in x
    d) the min element in x
    e) none

    13) add one or two statements to complete the following code that implements question 12 using vectors instead of a loop.

    x=1.5;
    N=50;
    k=[0:2:100];

    14) Which of the following is the corect code to determine y=1 + 1/x+1/x^2+1/x^3..+1/x^N until the last term is less than 10^-8, using x=1.5

    and is c) but why?? x=1.5; k=0; y=o; term=1/(x^k); while term >= 1e-8; y=y+term

    © BrainMass Inc. brainmass.com October 9, 2019, 6:52 pm ad1c9bdddf
    https://brainmass.com/computer-science/matlab/matlab-logical-expression-values-100743

    Solution Preview

    1) c is correct. A small problem to test it.
    x=input('please type x:');
    if(x>=-10&x<=10)
    t=1
    else
    t=0
    end

    10) c is correct.
    x=[1 2 3 4 6 5 10];
    >> y = x(1);
    for k=2:length(x)
    ...

    Solution Summary

    It provides sample codes in Matlab. The response was rated '5/5' by the student who posted the question originally.

    $2.19