Tag Archives: projection matrix

Linear Algebra and Its Applications, Exercise 3.2.10

Posted on May 24, 2014 by hecker

Exercise 3.2.10. Discuss whether the projection matrix from exercise 3.2.9 is invertible or not. Explain your answer. Answer:The projection matrix Note that each column of the resulting matrix is equal to the original vector multiplied by a scalar factor equal … Continue reading →

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Linear Algebra and Its Applications, Exercise 3.2.5

Posted on May 4, 2014 by hecker

Exercise 3.2.5. If is a vector in then what is the angle between and the coordinate axes? What is the matrix that projects vectors in onto ? Answer: Consider the  coordinate axis and the unit vector lying along that axis, … Continue reading →

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