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)
Question: Find the value of x for which the logarithmic function f(x) = log x equals the natural logarithmic function f(x) = ln x.
+
What are the roots of the equation x^2 - 5x + 6 = 0?
+
What is the maximum or minimum value of the function f(x) = 5x^2 - 2x + 3?
+
New questions in Mathematics
given cos26=k find cos13
a ferry travels 1/6 of the distance between two ports in 3/7 hour. the ferry travels at a constant rate. at this rate, what fraction of the distance between the two ports can the ferry travel in one hour?
A car tire can rotate at a frequency of 3000 revolutions per minute. Given that a typical tire radius is 0.5 m, what is the centripetal acceleration of the tire?
The length and breadth of my rectangular vegetable garden is 12,5m and 7,25m respectively. What is the perimeter of the garden?
A juice shop prepares assorted juices, for their juices they have 5 different types of fruit. How many types of assortments can be prepared in total, if it is considered an assortment to a juice made with two or more fruits?
4x-3y=5;x+2y=4
(5u + 6)-(3u+2)=
You have been hired to estimate the average weight of quarters in circulation. Based on the sample of quarters you collect (below), create a 90% confidence interval for the weight of quarters in circulation. Quarter Weights (grams) 5.631 5.714 5.719 5.689 5.551 5.723 5.705 5.627 5.627 5.715 5.576 5.632 5.641 5.676 5.660 5.699 5.609 5.634 5.713 5.591 5.674 5.675 5.684 5.694 5.655 5.632 5.598 5.675 5.628 5.562 5.636 5.583 5.567 5.551 5.649 5.708 5.696 5.614 5.637 5.601 5.628 5.711 5.566 5.653 5.653 5.597 5.687 5.717 5.678 5.654 5.556 5.707 5.563 5.628 5.679 5.714 5.555 5.719 5.634 5.647 5.717 5.612 5.705 5.657 5.670 5.607 5.687 5.666 5.612 5.718 5.714 5.713 5.663 5.641 5.589 5.656 5.712 5.639 5.577 5.580 5.674 5.636 5.625 5.597 5.616 5.591 5.616 5.700 5.706 5.695 5.562 5.699 5.607 5.573 5.659 5.632 5.654 5.568 5.628 5.687 5.605 5.689 5.687 5.554 5.618 5.701 5.681 5.645 5.714 5.665 5.661 5.634 5.714 5.586 5.656 5.673 5.657 5.717 5.611 5.578 5.579 5.614 5.644 5.724 5.647 5.566 5.697 5.558 5.586 5.586 5.611 5.573 5.573 5.709 5.629 5.649 5.552 5.615 5.645 5.611 5.686 5.588 5.641 5.704 5.703 5.696 5.557 5.551 5.725 5.608 5.725 5.603 5.677 5.638 5.573 5.640 5.561 5.631 5.563 5.671 5.662 5.569 5.648 5.680 5.681 5.551 5.555 5.578 5.701 5.645 5.670 5.574 5.594 5.705 5.633 5.719 5.680 5.647 5.641 5.553 5.616 5.698 5.552 5.566 5.559 5.697 5.686 5.560 5.629 5.701 5.622 5.615 5.553 5.608 5.637 5.663 5.696 5.714 5.675 5.613 5.594 5.669 5.569 5.716 5.705 5.603 5.709 5.717 5.606 5.581 5.575 5.601 5.600 5.664 5.715 5.705 5.583 5.586 5.592 5.550 5.628 5.662 5.603 5.559 5.676 5.558 5.678 5.671 5.642 5.581 5.568 5.706 5.665 5.712 5.574 5.602 5.699 5.716 5.693 5.711 5.635 5.612 BLANK #1: Is this a question involving mean or proportion? ***ANSWER "MEAN" OR "PROPORTION" (WITHOUT THE QUOTATION MARKS)*** BLANK #2: What is the LOW end of the estimate ***ANSWER TO 3 DECIMALS*** BLANK #3: What is the HIGH end of the estimate ***ANSWER TO 3 DECIMALS***
A job takes 9 workers 92 hours to finish. How many hours would it take 5 workers to complete the same job?
2.3/-71.32
4x/2+5x-3/6=7/8-1/4-x
A box of numbered pens has 12 red, 12 blue, 12 green and 12 yellow pens. The pens for each colour are numbered from 1 to 12. There is a unique number on each pen, so no pen is exactly the same as any other pen in the box. When reaching into the box to randomly draw five pens without replacement, what is the proportion of getting exactly four pens of the same colour (Note: the numbers matter but the order does not)?
Engineers want to design seats in commercial aircraft so that they are wide enough to fit ​95% of all males.​ (Accommodating 100% of males would require very wide seats that would be much too​ expensive.) Men have hip breadths that are normally distributed with a mean of 14.4 in. and a standard deviation of 1.2 in. Find P95. That​ is, find the hip breadth for men that separates the smallest ​95% from the largest 5​%.
MAKING AN ARGUMENT You use synthetic division to divide f(x) by (x − a) and find that the remainder equals 15. Your friend concludes that f (15) = a. Is your friend correct? Explain your reasoning.
effectiveness of fiscal and monetary policy under closed and open economies
We plan to test whether the mean mRNA expression level differs between two strains of yeast, for each of 8,000 genes. We will measure the expression levels of each gene, in n samples of strain 1 and m samples of strain 2. We plan to compute a P-value for each gene, using an unpaired two-sample t-test for each gene (the particular type of test does not matter). a) What are the null hypotheses in these tests (in words)? [2] b) If, in fact, the two strains are identical, how many of these tests do we expect to produce a P-value exceeding 1/4? [2]
A block slides across the floor with a force of 20N, which has an angle of 30°. The mass of the block is 2kg and the coefficient of friction is 0.1. Calculate the value of all the forces involved in this system and finally the value of the acceleration.
calculate the product of 4 and 1/8
Kayla started a book club at her school. The number of girls in the book club was one more than twice the number of boys. If there are 15 girls in the book club, how many boys are in the club?
5 1/9 + 2 2/3