# Linear Algebra (15 jobs and the decision) RFEI 2015

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# Description

Protection of set-off in July 2015goda! (screenshot attached to the decision) Decision made in the form of screenshots inserted in the world + exel. Assignments control work on the course "Linear Algebra"

Assignments control work on the course "Linear Algebra"

1.Nayti matrix C equal to the sum of A and B if ...
2. Calculate the product of the matrices A and B, if ...
3. Calculate the product of the matrices A and B, if ...
4. Find the matrix inverse of matrix A, if ...
5. Solve the system matrix method ...
6. Solve the system by Gauss: ...
7. Solve the system by Cramer: ...

8. Solve the problem.
The firm has been allocated 236 thousand. Conv. u to buy 29
items for office equipment: a few computers for the price of 20 thousand. conv. u for computer, office tables on 8.5 thousand. conv. u table and chairs for 1,5 thousand. conv. u per chair. Later it turned out that somewhere computers can be purchased for 19.5 thousand. Conv. meals. and tables - 8 thousand. conv. u (chairs at the same price), so that the same amount was purchased on 1 table anymore.
To find out how many units of each type of equipment was purchased.

9. The volume of the three types of products produced by the company "Plast" in December last year set vector ....

10. Find the area of the parallelogram constructed on the vectors space ...

11. Create the canonical equation of the line passing through the point ...
12. In a triangle with vertices ...
13. Write the equation of the plane passing through the point ..
14. Write the equation of the ellipse, if it is known that the distance between the foci of the ellipse is 8 and the minor axis ...
15. Find the eccentricity of the hyperbola given by the equation ..... answer rounded to the nearest tenth.

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