Question

Given the set: W={(𝑥,𝑦,𝑧) ∈ 𝐼𝑅^3 / 2𝑥 − 𝑦 =0} a) Prove that the set is a vector subspace in IR3 b) Determine the generator<W>

177

likes
885 views

Answer to a math question Given the set: W={(𝑥,𝑦,𝑧) ∈ 𝐼𝑅^3 / 2𝑥 − 𝑦 =0} a) Prove that the set is a vector subspace in IR3 b) Determine the generator<W>

Expert avatar
Jett
4.7
97 Answers
a) Para demostrar que W es un subespacio vectorial en \mathbb{R}^3, debemos verificar que cumple con las siguientes propiedades:

1. El vector cero pertenece a W: Como 2(0) - 0 = 0, el vector cero pertenece a W.

2. Cerrado bajo la suma: Sean (x_1, y_1, z_1) y (x_2, y_2, z_2) dos elementos arbitrarios en W, entonces:
2x_1 - y_1 = 0
2x_2 - y_2 = 0
Ahora sumamos estos dos elementos:
2(x_1+x_2) - (y_1+y_2) = 2x_1 - y_1 + 2x_2 - y_2 = 0 + 0 = 0
Por lo tanto, la suma está también en W.

3. Cerrado bajo la multiplicación por un escalar: Sea (x, y, z) \in W y \alpha un escalar arbitrario, entonces:
2x - y = 0
Ahora multiplicamos por \alpha:
2(\alpha x) - (\alpha y) = \alpha(2x - y) = \alpha(0) = 0
Por lo tanto, la multiplicación está también en W.

Dado que W cumple con las tres propiedades, podemos concluir que W es un subespacio vectorial en \mathbb{R}^3.

b) Para determinar el generador del conjunto W, necesitamos encontrar el conjunto más pequeño que genera W. Dado que W está definido por la ecuación 2x - y = 0, podemos expresar y como función de x:
2x - y = 0 \Rightarrow y = 2x
Por lo tanto, cualquier vector en W se puede representar como (x, 2x, z) con x, z \in \mathbb{R}.

Finalmente, el generador de W está dado por:
\langle W \rangle = \{(x, 2x, z) \ | \ x, z \in \mathbb{R}\}

\boxed{\langle W \rangle = \{(x, 2x, z) \ | \ x, z \in \mathbb{R}\}}

Frequently asked questions (FAQs)
What are the characteristics of the circle function: x^2 + y^2 = r^2?
+
What is the formula for the quadratic equation, given the coefficients of a quadratic function?
+
What is the limit as x approaches 2 of (x^2 - 4) / (x^3 - 8)?
+
New questions in Mathematics
A person who weighs 200 pounds on earth would weigh about 32 pounds on the moon. Find the weight of a person on earth who would weigh 15 pounds on the moon.
58+861-87
A brass cube with an edge of 3 cm at 40 °C increased its volume to 27.12 cm3. What is the final temperature that achieves this increase?
In a store there are packets of chocolate, strawberry, tutti-frutti, lemon, grape and banana sweets. If a person needs to choose 4 flavors of candy from those available, how many ways can they make that choice?
What is the r.p.m. required to drill a 13/16" hole in mild steel if the cutting speed is 100 feet per minute?
find x in the equation 2x-4=6
I need to know what 20% or £3292.75
Lim x → 0 (2x ^ 3 - 10x ^ 7) / 5 * x ^ 3 - 4x )=2
Suppose that you use 4.29 g of Iron in the chemical reaction: 2Fe(s) + 3 Cu2 + (aq) 2Fe 3 + (aq) + 3Cu(s ) - . What is the theoretical yield of Cu (s), in grams?
You are the newly appointed transport manager for Super Trucking (Pty) Ltd, which operates as a logistics service provider for various industries throughout southern Africa. One of these vehicles is a 4x2 Rigid Truck and drawbar trailer that covers 48,000 km per year. Use the assumptions below to answer the following questions (show all calculations): Overheads R 176,200 Cost of capital (% of purchase price per annum) 11.25% Annual License Fees—Truck R 16,100 Driver Monthly cost R 18,700 Assistant Monthly cost R 10,500 Purchase price: - Truck R 1,130,000 Depreciation: straight line method Truck residual value 25% Truck economic life (years) 5 Purchase price: Trailer R 370,000 Tyre usage and cost (c/km) 127 Trailer residual value 0% Trailer economic life (years) 10 Annual License Fees—Trailer R 7,700 Fuel consumption (liters/100km) 22 Fuel price (c/liter) 2053 Insurance (% of cost price) 7.5% Maintenance cost (c/km) 105 Distance travelled per year (km) 48000 Truck (tyres) 6 Trailer (tyres) 8 New tyre price (each) R 13,400 Lubricants (% of fuel cost) 2.5% Working weeks 50 Working days 5 days / week Profit margin 25% VAT 15% Q1. Calculate the annual total vehicle costs (TVC)
Use a pattern to prove that (-2)-(-3)=1
9 x² + 2x + 1 = 0
Determine a general formula​ (or formulas) for the solution to the following equation.​ Then, determine the specific solutions​ (if any) on the interval [0,2π). cos30=0
What is the value of f(-3) for the function X squared+5x-8=
Calculate the change in internal energy of a gas that receives 16000 J of heat at constant pressure (1.3 atm) expanding from 0.100 m3 to 0.200 m3. Question 1Answer to. 7050J b. 2125J c. None of the above d. 2828J and. 10295 J
Solve for B write your answer as a fraction or as a whole number. B-1/7=4
7- A printing company found in its investigations that there were an average of 6 errors in 150-page prints. Based on this information, what is the probability of there being 48 errors in a 1200-page job?
Sally’s sales for last Sunday were $1,278. That was an increase of 6.5% over her sales for the previous Saturday. What were her sales for the previous Saturday?
5a-3.(a-7)=-3
Question 3 A square has a perimeter given by the algebraic expression 24x – 16. Write the algebraic expression that represents one of its sides.