## Daily outline for Thu, Sep 22, 2016 9:10 AM (1 year ago)

### LAB: Linear Algebra

assigned today:

Due today:

# plan

## goals

- Plotting
- Manipulate
- Eigen-approach
- matrices
- vectors
- part
- when you find them, are they perpendicular?

- pure functions

## Timeline

- make circle of points
- apply transformation
- Manipulate
- eigen approach

# What happened

- We talked about the clients for the arduino project. I said they'd have to convince me to do an off-campus application
- note that I forgot to mention that the wifi issues are different

- We developed code to make a plot of points on a circle
- pts=Table[{Cos[x], Sin[x]}, {x, 0, 2 Pi-(2 Pi)/100, (2 Pi)/100]
- Graphics[Point[pts]]
- we talked about Graphics by asking how to change various aspects of the first example on the help page.

- We talked about how to type in a matrix
- We talked about how to apply that matrix to all the points
- I made the mistake of talking about pure functions. DON'T DO THIS IN THE FUTURE

- We talked about how to do the Locator function in Manipulate
- We talked about how to hunt for eigenvectors and asked if they're perpendicular

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