Questions Answered

JohnM:
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\(\bf Problem\ 10.1\) (PDF from online course): (3.6 #11. Introduction to Linear Algebra: Strang) A is an m by n matrix of rank r. Suppose t…
 updated one year ago
 4 replies
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jordanhe:
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What is the matrix P that projects onto the column space of matrix Q? What is matrix projecting?
 updated one year ago
 3 replies
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JohnM:
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What's the LaTex command for simply bolding and/or italicizing a single word?
 updated one year ago
 13 replies
 4 Medals

JohnM:
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∖(∖underline{my first underlined text!}∖)
 updated one year ago
 1 reply
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JohnM:
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From Problem 16.1 in Exercises on orthogonal vectors and subspaces:
I don't understand what this problem is asking.
First, where does the id…
 updated one year ago
 4 replies
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JohnM:
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Session 27: Approximation Formula
Two questions about Example 1 in the PDF titled "The Tangent Approximation".
1. "Thus if Δx.01 andΔy…
 updated one year ago
 6 replies
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JohnM:
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Session 20  Examples: Velocity, Speed and Arc Length
In #2 in this PDF how does 2a<sin^2(θ/2), sin(θ/2)cos(θ/2)> get reduced to
2a (sin^…
 updated one year ago
 4 replies
 1 Medal

JohnM:
Group Title
Session 17: General Parametric Equations; the Cycloid
Can someone please explain how the OC vector in the Parmetric Curves PDF was found to…
 updated one year ago
 6 replies
 1 Medal

JohnM:
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Exercises on transposes, permutations, spaces 5.1 etc.
Can someone please explain the homework questions, because I have not seen some of t…
 updated one year ago
 2 replies
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JohnM:
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@Screech: Continuing from "Having trouble with Classes" post.
Screech: I read your attached car.py. Run works and the coding is excellent. …
 updated one year ago
 18 replies
 2 Medals

JohnM:
Group Title
Week 7  Having trouble with classes
I don't see any questions posted on Classes even though the Gentle Python course has ended. Did others…
 updated one year ago
 15 replies
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JohnM:
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MIT Week6 homework  Classes
Question: Why does the code below output 10:30?
Also, the homework asks us if paris_clock and boston_clock a…
 updated one year ago
 3 replies
 1 Medal

MOOCE:
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The Mystery of the Missing Code: At about minute 20 of lecture 6 in 6.00SC (which is part of the week 5 assignment of the Mechanical MOOC c…
 updated one year ago
 6 replies
 2 Medals

jorge921995:
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Does anyone know how to turn in the assignments?
 updated one year ago
 5 replies
 3 Medals

MOOCE:
Group Title
Week 6 for the first group of Mech MOOCers and week 1 for the second group! How's it going out there?
 updated one year ago
 10 replies
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frankdpnw:
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Exercise 3.4 people function
I have spent a fair amount of time on trying to get this function to work and now it seems as if it does. It…
 updated one year ago
 4 replies
 3 Medals

MOOCE:
Group Title
Week 2 check in. Let us know how things are going for you during the second week of the Mechanical MOOC Python course.
 updated one year ago
 25 replies
 4 Medals

JohnM:
Group Title
In Problem Set #1 1B2 what is h in s(t+h)s(t)/h?
If h=height how can it be added to time t? (As shown in the expanded equation)
 updated 2 years ago
 1 reply
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