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1) (3 pts) Modify the `sc1.m` script to include the calculation
of r and R^{2}. What are the values of these quantities?

2) (12 pts) Redo Problem 4 of Homework 2. However,
you can't use the `norm` function. You can only use the
`sum`, `sqrt`, `max` and `abs` functions and the
basic calculation operators (note: (`'`) will be considered as
an operator for the rest of the semester).
We have not looked at the `max` and `abs` functions,
but you can type `help max` and `help abs` to see what
these function do (you might want to do some experimenting with these).

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On 14 Sep 2018, 10:11.