1,975 Answered Questions for the topic linear algebra

11/25/21

solve the diffrential equation:
Solve the DEy''= ex (y')2
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11/25/21

solve the DE (diffrential equation)
Solve the DE :x2y' − 4xy = x6 cos(x)
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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
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11/22/21

Consider the model w=10-0.6v with predictor v and w response .
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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
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Linear Algebra Math Linear Equations

11/16/21

Write an equation in slope-intercept form of the line with a slope of −3 4 and y-intercept of =0
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Linear Algebra

11/15/21

Is there a solution set?

X=7y-83x-21y=-24
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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,+).
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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,+)
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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.
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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
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Linear Algebra

11/12/21

Explain why the following sets are not vector subspaces of the indicated vector spaces. W = {(x, y) ∈R^2 |x, y ∈Q}.
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11/11/21

Slope-Intercept Form
I need to find the slope-intercept form.SLOPE: -4x-intercept: 4
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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.
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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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11/08/21

How to find the third deriavative of this function using leibniz theorem?

Using leibniz theorem find the third derivative of this following functiony= e2xlnx
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Linear Algebra Calculus

11/05/21

Concave up?.....
Consider the parabolic function f(x) = ax2 + bx + c , where a ≠ 0, b and c are constants. For what values of a, b and c is f.
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Linear Algebra Calculus

11/05/21

Evaluate the following limit.
lim x + √x / x - 2x → 2-
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Linear Algebra Calculus

11/05/21

Evaluate the following limit.
lim 2x - xex / x - 5x → -∞
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Linear Algebra Calculus

11/05/21

Evaluate the following limit.
lim x + 1 / | x + 1| x→-1
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Linear Algebra Calculus

11/05/21

How fast is the size of the population changing after 1 minute?
Under a set of controlled laboratory conditions, the size of the population P of a certain bacteria cultureat time t (in seconds) is given by the functionP(t) = 3t2 + 3et + 10, t ≥ 0
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Linear Algebra Calculus

11/05/21

Find the average rate of change of P at t = 2 and t = 6?
Under a set of controlled laboratory conditions, the size of the population P of a certain bacteria cultureat time t (in seconds) is given by the functionP(t) = 3t2 + 3et + 10, t ≥ 0
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Linear Algebra Calculus

11/05/21

What is the size of the population after 1 minute?
Under a set of controlled laboratory conditions, the size of the population P of a certain bacteria culture at time t (in seconds) is given by the function P(t) = 3t2 + 3et + 10, t ≥ 0
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Linear Algebra Calculus

11/05/21

Use Mathematica to verify.
Use the definition of the derivative to differentiate f (x) = ln x.
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Linear Algebra Calculus

11/05/21

Use Mathematica to verify.
Use the definition of the derivative to differentiateV = 4/2 𝝅r3
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