Question

2x+y-3z=3 x+y+z=-1 3x-y+2z=0 Solve the system of equations using Cramer's Method

179

likes
896 views

Answer to a math question 2x+y-3z=3 x+y+z=-1 3x-y+2z=0 Solve the system of equations using Cramer's Method

Expert avatar
Esmeralda
4.7
102 Answers
İlk olarak, denklem sistemimizi matris formuna dönüştürelim:
\begin{pmatrix} 2 & 1 & -3 \ 1 & 1 & 1 \ 3 & -1 & 2 \end{pmatrix} \begin{pmatrix} x \ y \ z \end{pmatrix} = \begin{pmatrix} 3 \ -1 \ 0 \end{pmatrix}
Şimdi, Cramer'ın kuralını kullanarak çözüm yapalım. İlk olarak ana matrisin determinantını hesaplayalım, D :
D = \begin{vmatrix} 2 & 1 & -3 \ 1 & 1 & 1 \ 3 & -1 & 2 \end{vmatrix}
Şimdi, x için determinantı D_x bulalım:
D_x = \begin{vmatrix} 3 & 1 & -3 \ -1 & 1 & 1 \ 0 & -1 & 2 \end{vmatrix}
Sonra, y için determinantı D_y bulalım:
D_y = \begin{vmatrix} 2 & 3 & -3 \ 1 & -1 & 1 \ 3 & 0 & 2 \end{vmatrix}
En son olarak, z için determinantı D_z bulalım:
D_z = \begin{vmatrix} 2 & 1 & 3 \ 1 & 1 & -1 \ 3 & -1 & 0 \end{vmatrix}
Şimdi, D , D_x , D_y ve D_z 'yi hesapladık, bu değerleri kullanarak x , y ve z değerlerini bulabiliriz. \

D=\begin{vmatrix}2 & 1 & -3 \ 1 & 1 & 1 \ 3 & -1 & 2\end{vmatrix}=19

D_x=\begin{vmatrix}3 & 1 & -3 \ -1 & 1 & 1 \ 0 & -1 & 2\end{vmatrix}=8

D_y=\begin{vmatrix}2 & 3 & -3 \ 1 & -1 & 1 \ 3 & 0 & 2\end{vmatrix}=-10

D_z=\begin{vmatrix}2 & 1 & 3 \ 1 & 1 & -1 \ 3 & -1 & 0\end{vmatrix}=-17

Son olarak, x , y ve z değerlerini bulmak için aşağıdaki formülleri kullanacağız:

x=\frac{D_x}{D}=\frac{8}{19}

y=\frac{D_y}{D}=\frac{-10}{19}

z=\frac{D_z}{D}=\frac{-17}{19}

\boxed{x=\frac{8}{19},\quad y=\frac{-10}{19},\quad z=-\frac{17}{19}}

Frequently asked questions (FAQs)
Question: What is the maximum value achieved by a continuous function f(x) with domain [0, 5] and f'(x) = 2x - 1?
+
What is the probability of selecting a red marble from a bag containing 5 red marbles and 10 blue marbles?
+
What is the solution to the system of inequalities: 3x + 2y ≥ 5 and 2x - 4y < 10? (
+
New questions in Mathematics
2(2+2x)=12
5 squirrels were found to have an average weight of 9.3 ounces with a sample standard deviation is 1.1. Find the 95% confidence interval of the true mean weight
1 plus 1
How long will it take for $900 to become $5000 at an annual rate of 11.15% compounded bimonthly?
If you randomly selected one person from the 900 subjects in this study, what is the probability that the person exhibits the minimum BMI?
15/5+7-5
I want you to solve this problem as a grade sixth pupil in primary school: 8 Pigs ate 6 bags of fee in 20 days. How long will it take 10 pigs to eat 15 bags of feed eating at the same rate?
find f(x) for f'(x)=3x+7
. What will be the osmotic pressure of a solution that was prepared at 91°F by dissolving 534 grams of aluminum hydroxide in enough water to generate 2.784 ml of solution.
using the math and science known about the jefferson river bridge Find a truss in use and develop a load diagram. Use a load of 50 lb on each joint along the bottom of the truss for a truss that actrs as a bridge and along the top joints for a truss that acts as a roof
How to do 15 x 3304
7=-4/3y -1
A teacher has 25 red and yellow counters altogether. She has 4 times as many red counters than yellow counters. How many yellow counters does the teacher have?
48 kg of 30% sulfuric acid in a mixture of 10% and 40% sulfuric acid arose. How many kilograms were each of the original solutions?
Find the area of a triangle ABC when m<C = 14 degrees, a = 5.7 miles, and b = 9.3 miles.
Pablo has a balance of $440,000 and 2/5 of the money is used to pay bills. How much money do you have left after paying the bills?
(6²-14)÷11•(-3)
A factory produces glass for windows. The thickness X of an arbitrarily selected pane of glass is assumed to be Normally distributed with expectation μ = 4.10 and standard deviation σ = 0.04. Expectation and Standard deviation is measured in millimeters. What is the probability that an arbitrary route has a thickness less than 4.00 mm?
Solve the system of equations by the addition method. 0.01x-0.08y=-0.1 0.2x+0.6y=0.2
The domain of the function f(x)=x+7x2−144 is (−∞,), ( ,), and ( , ∞).