1,954 Answered Questions for the topic linear algebra

Linear Algebra

12/22/21

please help me with this problem

line passes through (4,-2) and slope 5/4 write an equation in slope intercept form
Linear Algebra Linear Equations

12/22/21

Find the whole answer of Ax = b, including all steps.

A = [2 4 642 5 762 3 52] b = [b1b2b3] = [435]
Linear Algebra Math Maths Mathematics

12/21/21

Linear Algebra Question

Let V = P2 equipped with the inner product <f, g> = integral from -1 to 1 of t * f(t) *g(t) dtconsider the linear transformation T from V into R such that T(f) = f(0)Find a basis of the... more
Linear Algebra Linear Equations

12/20/21

How to Graph a Line given 1 point and the slope!

Graph the line that contains the point (-4, -7) and has a slope of 2 (m = 2).
Linear Algebra

12/16/21

Maximize f=7x+5y subject to the following constraints and and find the shadow price for Constraint 4 :

Constraint 1:  3x+4y<=24Constraint 2:  2x+y<=10Constraint 3:  x =>1Constraint 4:  y<=5x and y are non-negative 
Linear Algebra

12/13/21

Linear Algebra - Finding values

Find all the values of the sixth root for the following: (-1-i)^1/6
Linear Algebra

12/01/21

Write an equation in slope-intercept form for the line passing through the pair of points. (6, 4) (4, -5)

Write an equation in slope-intercept form for the line passing through the pair of points. (6, 4) (4, -5)
Linear Algebra Math

11/29/21

6. Harry is buying a mix of almonds and peanuts. Almonds are $15/kg and peanuts are $5/kg. Harry spends $75 in total.

continuation from the previous question^^^6. a)Write an equation to model this situation. Define your variables. 6. b) If Harry only buys almonds, how many kg can he buy?
Linear Algebra

11/28/21

Invert these matrices A by the Gauss-Jordan method starting [AI]

A = [1 0 0 2 1 3 0 0 1] and A =[ 1 1 1 1 2 2 1 2 3 ]

11/25/21

solve the diffrential equation:

Solve the DEy''= ex (y')2

11/25/21

solve the DE (diffrential equation)

Solve the DE :x2y' − 4xy = x6 cos(x)
Linear Algebra

11/23/21

Answer each of the following as True or False justifying your answers

If is a skew symmetric matrix such that , then . If , and is a matrix such that and , then .If and are both inverses of the matrix , then .If , then .If and are linearly independent... more
Linear Algebra

11/20/21

i cannot solve this exerccise

Let M = {1, 2, 3, 4, 5, 6, 7, 8, 9}. As usual, denote ¨ P (M): = {A | A ⊆ M} is the power set of M. We consider the maps⊕: P (M) × P (M) → P (M) and *: F2 × P (M) → P (M),byA ⊕ B: = A triangle B... more
Linear Algebra

11/15/21

Is there a solution set?

X=7y-83x-21y=-24
Linear Algebra

11/14/21

I cannot solve the following

Prove that K= {(x+y,y), x in R ,y in Z } is a subgroup of (R^2,+).
Linear Algebra

11/14/21

I cannot solve the following exersice

Prove that H = {(2k,3k) when k in R} is a subgroup of( R^2,+)
Linear Algebra Math

11/12/21

A pole that is 3m tall casts a shadow that is 1.64m long. At the same time, a nearby tower casts a shadow that is 44.5m long. How tall is the tower? Round your answer to the nearest meter.

A pole that is 3m tall casts a shadow that is 1.64m long. At the same time, a nearby tower casts a shadow that is 44.5m long. How tall is the tower? Round your answer to the nearest meter.
Linear Algebra Linear Independency

11/12/21

Linear independency

Why the set S is linearly independent ? Don't we have theorem which indicate that when we have signal set it is linearly independent. For example: (2,5,9,8,6) The set S={2sin , 2cos , 3} 2 2 x x is... more

11/11/21

Slope-Intercept Form

I need to find the slope-intercept form.SLOPE: -4x-intercept: 4
Linear Algebra Math Calculus Linear Equations

11/09/21

Find the local linear approximation L(x) of the function f(x)=x^2+3 at x=1 .

It will be really helpful if you describe briefly.
Linear Algebra Calculus Prealgebra Functions

11/08/21

Find the local linear approximation L(x) of the function f(x)=x^2+3 at x=1 .

f(x)=x2+3 at x=1

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