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 is the value of sinh(arccosh(3)) - tanh(arcsinh(2)), given that sinh(x) = (e^x - e^(-x))/2 and cosh(x) = (e^x + e^(-x))/2?
+
Question: The heights (in inches) of a group of students are 65, 68, 70, 72, 75. What is the standard deviation of their heights?
+
What is the length of the perpendicular bisector of a triangle with sides measuring 8, 10, and 12 units?
+
New questions in Mathematics
A particular employee arrives at work sometime between 8:00 a.m. and 8:40 a.m. Based on past experience the company has determined that the employee is equally likely to arrive at any time between 8:00 a.m. and 8:40 a.m. Find the probability that the employee will arrive between 8:05 a.m. and 8:30 a.m. Round your answer to four decimal places, if necessary.
Write 32/25 as a percent
For a temperature range between 177 degrees Celsius to 213 degrees Celsius, what is the temperature range in degrees Fahrenheit.
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?
3x+2/2x-1 + 3+x/2x-1 - 3x-2/2x-1
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?
Find the measures of the sides of ∆KPL and classify each triangle by its sides k (-2,-6), p (-4,0), l (3,-1)
4X^2 25
If eight basketball teams participate in a tournament, find the number of different ways that first, second, and third places can be decided assuming that no ties are allowed.
-3(-4x+5)=-6(7x-8)+9-10x
A study reports the following final notation: F (3, 32) = 9.50, p < .05. How many total participants were involved in this study? Group of answer choices 34 32 36
Log5 625
. 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.
viii. An ac circuit with a 80 μF capacitor in series with a coil of resistance 16Ω and inductance 160mH is connected to a 100V, 100 Hz supply is shown below. Calculate 7. the inductive reactance 8. the capacitive reactance 9. the circuit impedance and V-I phase angle θ 10. the circuit current I 11. the phasor voltages VR, VL, VC and VS 12. the resonance circuit frequency Also construct a fully labeled and appropriately ‘scaled’ voltage phasor diagram.
Two particles of electrical charges Q1=3.8×10-⁶C and q,=4.4×10-⁶C are separated in vacuum by a distance of 4.0.10-⁸ m. Since K=9.0.10⁹ N.m²/C², the intensity of the interaction force between them, in newtons, is?
A company has had the following data for two consecutive years. Total, asset item 3,100,500 euros 3,300,550 euros. Net amount of business figures 4,755,250 euros /5,100 euros Average number of workers employed during the year 64/70 You can present a balance sheet in an abbreviated form
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?
If sin A=0.3 and cos A=0.6, determine the value of tan A.
A confidence interval for a population mean has a margin of error of 3.5. a. Determine the length of the confidence interval. b. If the sample mean is 47.8 ​, obtain the confidence interval. a. The length of the confidence interval is?
Find the orthogonal projection of a point A = (1, 2, -1) onto a line passing through the points Pi = (0, 1, 1) and P2 = (1, 2, 3).