Coursera Machine Learning Week 1 Quiz Answers – Linear Algebra | Andrew NG

In this article, you will find Coursera Machine Learning Week 1 Quiz Answers – Linear Algebra | Andrew NG. Use “Ctrl+F” To Find Any Questions or Answers. For Mobile Users, You Just Need To Click On Three dots In Your Browser & You Will Get A “Find” Option There. Use These Options to Get Any Random Questions Answer.
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Coursera Machine Learning Week 1 Quiz Answers – Linear Algebra | Andrew NG

Coursera Machine Learning Week 1 Quiz Answers – Linear Algebra | Andrew NG

1. Let two matrices be
gif , gif
What is A – B?

    •  gif
    •  gif
    •  gif
    •  gif

1. Let two matrices be
gif , gif
What is A + B ?

    •  gif
    •  gif
    •  gif
    •  gif

1. Let
     gif
What is 2∗x ?

    •  gif

      Correct
      To multiply the vector x by 2, take each element of x and multiply that element by 2.

    •  gif
    •  gif
    •  gif

2. Let
gif
What is 2∗x ?

    •  gif
    •  gif

      Correct
      To multiply the vector x by 2, take each element of x and multiply that element by 2.

    •  gif
  •  gif

3.  Let u be a 3-dimensional vector, where specifically
gif
What is gif ?

    •  gif
    •  gif
    •  gif
    •  gif

4. Let u and v be 3-dimensional vectors, where specifically
gif
and
gif
what is gif ?
(Hintgif is a 1×3 dimensional matrix, and v can also be seen as a 3×1 matrix. The answer you want can be obtained by taking the matrix product of gif and gif.) Do not add brackets to your answer.
Answer: -4
5. Let A and B be 3×3 (square) matrices. Which of the following must necessarily hold true? Check all that apply.

    •  gif
    •  If A is the 3×3 identity matrix, then gif

      Correct
      Even though matrix multiplication is not commutative in general (gif for general matrices A,B), for the special case where gif, we have gif, and also gif. So, gif.

    •  gif
    •  gif

      Correct
      We add matrices element-wise. So, this must be true.


5. Let A and B be 3×3 (square) matrices. Which of the following must necessarily hold true? Check all that apply.

    •  If gif, then C is a 3×3 matrix.

      Correct

    •  If A is the 3×3 identity matrix, then gif

      Correct
      Even though matrix multiplication is not commutative in general (gif for general matrices A,B), for the special case where gif, we have gif, and also gif. So, gif.

    •  gif
    •  gif

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Is Andrew Ng’s Machine Learning course good?
It is the Best Course for Supervised Machine Learning! Andrew Ng Sir has been like always has such important & difficult concepts of Supervised ML with such ease and great examples, Just amazing!
How do I get answers to coursera assignment?
Use “Ctrl+F” To Find Any Questions Answered. & For Mobile Users, You Just Need To Click On Three dots In Your Browser & You Will Get A “Find” Option There. Use These Options to Get Any Random Questions Answer.
How long does it take to finish coursera Machine Learning?
this specialization requires approximately 3 months with 75 hours of materials to complete, and I finished it in 3 weeks and spent an additional 1 week reviewing the whole course.
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Submit a programming assignment Open the assignment page for the assignment you want to submit. Read the assignment instructions and download any starter files. Finish the coding tasks in your local coding environment. Check the starter files and instructions when you need to. Reference

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