Title: IV paskaita' Kriteriju jungimas' Tiesiniu lygciu sistemos' Excel naudojimas' Sprestuvas Solver
1IV paskaita. Kriteriju jungimas. Tiesiniu lygciu
sistemos. Excel naudojimas. Sprestuvas (Solver)
2Kriteriju jungimo (agregavimo) problema
- Sudetingu udaviniu sprendime tenka ivertinti
daugiau nei viena kriteriju. - Vienas i tokios situacijos nagrinejimo budu
sujungti kriterijus, sudaryti bendra kriteriju - Yra keletas kriteriju jungimo budu vienas i
paprasciausiu sumavimas (adityvusis
kriterijus). Danai dar ivertinami ir komponentu
svoriai. - Paprasciausias - trupmeninis kriterijus
3Bendro kriterijaus gavimas (1)
4Adityvusis kriterijus (2)
5 6(No Transcript)
7Tiesiniu lygciu sistemos. Excel Sprestuvas
- Tiesiniu lygciu sistemos
- Excel naudojimas
- Excel Sprestuvas
- Lygciu sistemu sprendimas su Sprestuvu
8Programos Excel naudojimas
- Formuliu skaiciavimas
- Funkcijos
- Diagramos
- Priedai (Add-Inns) duomenu analize, sprestuvas
(Solver)
9Sprestuvas (Solver)
- Solver Add-In Calculates solutions to what-if
scenarios based on adjustable cells and
constraint cells. - Placiau www.solver.com
-
10Sprestuvo (Solver) naudojimas
- Instaliavimas (Tools - Add-Inns- Solver)
- About Solver (Excel Help)
- Solver is part of a suite of commands sometimes
called what-if analysis tools. With Solver, you
can find an optimal value for a formula in one
cell called the target cell on a worksheet.
Solver works with a group of cells that are
related, either directly or indirectly, to the
formula in the target cell. Solver adjusts the
values in the changing cells you specify called
the adjustable cells to produce the result you
specify from the target cell formula. You can
apply constraints to restrict the values Solver
can use in the model, and the constraints can
refer to other cells that affect the target cell
formula. - Use Solver to determine the maximum or minimum
value of one cell by changing other cells for
example, you can change the amount of your
projected advertising budget and see the affect
on your projected profit amount.
11Apie Excel sprestuva skaitykite
- The Solver Add-in for Excel . http//www.add-ins.c
om/solver.htm - Solving a Linear Program Using the Excel Solver .
http//www-math.cudenver.edu/billups/courses/ma33
00/excel/Excel-solver.html - LINEAR OPTIMIZATION PROBLEMS USING EXCEL SOLVER.
su pavyzdiais http//faculty.babson.edu/aieta/e
xclcmpn/AppndxB/appndixb.htmAppendix B
12Tiesiniu lygciu sistemos bendras pavidalas
a11x1a12x2a13x3a1nxnb1 a21x1a22x2a23x3a
2nxnb2 am1x1am2x2am3x3amnxnbm m
lygciu skaicius, n kintamuju skaicius.
13Tiesiniu lygciu sistemos pavyzdys
x-y5z-6 3x3y-z10 x3y2z5
14- Parinkti b, kad lygciu sistema turetu sprendini.
Pradioje imti b3
15- Parinkti b, kad lygciu sistema turetu sprendini.
Pradioje imti b3
16- Parinkti b, kad lygciu sistema turetu sprendini.
Pradioje imti b3
17Namu darbas
- Isisavinti lygciu sistemu sprendima naudojantis
Excel sprestuvu.
18Lygciu sistemu pavyzdiai
- Parinkti b, kad lygciu sistema turetu sprendini.
Pradioje imti b3