# Mathematics 2C

**6. session**
Tuesday 3. March 2009

Auditorium M1.80

### Program

- 09:00-10:20
- Lecture on the last part of section 1.5 in Lay and on section 1.7,
Linear Independence.
- 10:20-10:45
- Introduction to the exercises.
- 10:45-12:30
- Exercises in groups.

### Exercises

- Lay section 1.5 page 71
- Exercise no. 1, 3, 5, 7, 15, 25
- In exercise 5 and 7: Write the solution set as a span of vectors.

Exercise: Recall that the vectors **i**, **j** and **k**
in 3D-space are defined by
**i** = (1,0,0), **j** = (0,1,0) and **k** = (0,0,1).

Give a geometric description of the following subsets of 3D-space:
Span{**i**}, Span{**j**}, Span{**k**},

Span{**i**, **j**}, Span{**i**, **k**},
Span{**j**, **k**},

Span{**i**, **j**, **k**}.

Latest update 24. February 2009 by Iver Ottosen