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Matrices question. PLSSSSS HELP.

4. Let n≥2, let A and B b en×n matrices and let On be the n×n matrix with every entry 0.(b) Suppose that A2 = On. Show that In − A is invertible, and that (In − A)-1 = In + A.(c) Suppose that Am =... more

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Calculus 3

09/09/18

dentify the following surfaces as an elliptical paraboloid, hyperbolic paraboloid, a hyperboloid of one sheet, a hyperboloid of two sheets, a cone, a circular c

I have 7-9 of these answers correct, but it does not tell me which ones are incorrect (although I have a hunch). The following are the problems and the answers are in bold that I have... more

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Calculus 3

09/09/18

Identify the type of quadric surface defined by the equation and find all x, y, and z intercepts of the resulting graph.

16y2-25x2+z2=1 is the equation. It wants: The quadratic surface is an _____ with x-intercept when x = _______, y-intercept when y = _______, z-intercept when z = ______. I had plugged in... more

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Calculus 3

09/05/18

Suppose U = <2,3,4> Then:

<4,5,3> makes a (right, obtuse, or acute) with u. <5,-1,2> makes a (right, obtuse, or acute) with u. <-8,0,4> makes a (right, obtuse, or acute) with u. <3,2,-3> makes a... more

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Calculus 3

09/04/18

What are the coordinates of the point where he makes his turn?

Gandalf the Grey started in the Forest of Mirkwood at a point with coordinates (−3,3) and arrived in the Iron Hills at the point with coordinates (−1,6). If he began walking in the direction of the... more

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Calculus 3

09/04/18

Let V = <1, 3, 3>. Find a unit vector for this.

I have 1/sqrt(10), 3/(sqrt(10)), 3/sqrt(10). I cannot understand why this is not the answer. It is pointing in the same direction.

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Calculus 3

09/04/18

C-(-4,2,4). Find the distance between the point (x,y,z) and C.

I had tried the points (0,0,0)-(-4,2,4) and then use the distance formula, but that has not worked. Then I tried (1,1,1), but that also did not work. I am lost. Any help is needed.

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Calculus 3

08/31/18

Find the length of ->OR.

(We are talking about vectors. R = (4, 5, 5). Then it has, ||->OR|| = _____. I'm not sure how you find OR if you do not have what O is. Thank you. (Arrows are supposed to be on... more

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Calculus 3

08/30/18

Needing to find the X(t) and Y(t) in the equation. This involves Calculus and the hint was Recall the parametric representation of the unit circle as (cost,sin

While a planet P rotates in a circle about its sun, a moon M rotates in a circle about the planet, and both motions are counterclockwise in the same plane. Let's call the distance between M and P... more

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Calculus 3

08/29/18

Find the equation of a sphere if one of it's diameters has endpoints (-10,0,-6) and (4, 14, 8).

I have written: (x+3)2+(y-7)2+(z-1)2-sqrt(588)/2 = 0. But it is marked incorrect.

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Calculus 3

08/29/18

Find an equation of the largest sphere with center (5, 3, 6) and is contained in the first octant. Be sure your formula is monic.

I had put the equation as: (x-5)^2+(y-3)^2+(z+6)^2 However it was viewed as incorrect. Also they had that it equaled zero. equation input = zero.

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Calculus 3

08/19/18

Find the equation of the sphere centered at (−1,10,2) ( − 1 , 10 , 2 ) with radius 4.

Find the equation of the sphere centered at (−1,10,2) ( − 1 , 10 , 2 ) with radius 4. ___________________ = 0 Give an equation which describes the intersection of this sphere with the plane... more

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Calculus 3

08/16/18

Double integral - calculating area

Calculate the area of the region bounded by the two curves, y = 4 - x2 and y = x + 2. The answer is meant to be 9/2 but I just cannot get it!!! Maybe my bounds are incorrect.... help!

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Answers •3

Calculus 3

07/07/18

Find an area bounded by a graph

I need help with this task. cx(x^2/a^2+y^2/b^2)=y^2,x=b^2/c

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Calculus 3

06/27/18

Find the volume of the solid

Find the volume of the solid bounded by the plane z = 5 and the hyperboloid z = SquareRoot(9+x^2+y^2)

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Calculus 3

06/25/18

Use Lagrange multipliers to find the maximum and minimum values of f(x,y)=5x+y on the ellipse x^2+36y^2=1.

Use Lagrange multipliers to find the maximum and minimum values

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Calculus 3

06/25/18

Use Lagrange multipliers to find the maximum and minimum values of f(x,y)=5x+y on the ellipse x^2+36y^2=1.

Use Lagrange multipliers to find the maximum and minimum values

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Answers •0

Calculus 3

05/15/18

find volume using triple integrals

a triple integral in spherical coordinates to find the volume of the solid bounded by the surface s z=0, z=a, x2+y2+z2= 4a2

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Calculus 3

05/12/18

Integrate the function f(x,y,z) = 1/( √(x^2+y^2)) over R1 is the region bounded from above by z = 2 and from below by the cone x^2 +y^2−z^2 = 0

Can u please specify how the boundaries are found and whether its better to integrte it using cylindrical or rectangular coordinates. Thank you in advance

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Calculus 3

04/26/18

How to find $u_{min}(d,r)$ if $xtan\theta - \frac{gx^2}{2u^2cos^2\theta} \geq r + \sqrt{r^2-(x-d)^2}$ for $d-r \leq x \leq d+r$

How to find umin(d,r) if xtanθ - (gx^2)/(2u2cos2θ) > r + √(r2-(x-d)2) for d-r < x < d+r ? And 0 < θ < π/2 , d and r can be any positive real number which d >r

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Calculus 3

04/20/18

Calculating work done by force field ( multivariable calculus )

Calculate the work done by the force field F(x,y,z)=(xx +z2 )i + (yy + x2 )j + (zz +y2)k when a particle moves under its influence around the edge of the part of the sphere x2 +y2 +z2 =4 that lies... more

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Calculus 3

04/19/18

Particle moving through 3D space problem; calc III problem.

The problem reads: "Consider a particle moving through space along the trajectory r(t) = (cos(t),sin(t),t) for t≥0. Draw a nice picture of this trajectory. Suppose that at time t0= 13(π/6), the... more

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Calculus 3

04/02/18

Show that.../ Evaluate

a. Suppose ƒ is continuous and a > 0. Show that ∫0a ∫0y ∫0z ƒ(x) dx dz dy = (1/2) ∫0a (a-x2) ƒ(x) dx.b. Let R = {(x,y) : 0 ≤ x ≤ √(π), 0 ≤ y ≤ √(π)}. Evaluate ... more

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Calculus 3

03/25/18

Differential Equation Question

How would I write this in matrix form (x' = AX) x' = x y' = y Note: Is it supposed to be like this: x' = (1 v 1)(x v y) or x' = (1 + 0 v 1 + 0)(x v y)? Note: the "v" means the value after... more

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Calculus 3

02/15/18

Find Z(subx) and z(suby)

Let exyz = 2. Find zx and zy in 3 ways and check for agreement. a. use result of a previous exercise (i.e. Assume that F(x,y,z(x,y))=0 implicitly defines z as a differentiable function of x... more

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Calculus 3

Matrices question. PLSSSSS HELP.

dentify the following surfaces as an elliptical paraboloid, hyperbolic paraboloid, a hyperboloid of one sheet, a hyperboloid of two sheets, a cone, a circular c

Identify the type of quadric surface defined by the equation and find all x, y, and z intercepts of the resulting graph.

Suppose U = <2,3,4> Then:

What are the coordinates of the point where he makes his turn?

Let V = <1, 3, 3>. Find a unit vector for this.

C-(-4,2,4). Find the distance between the point (x,y,z) and C.

Find the length of ->OR.

Needing to find the X(t) and Y(t) in the equation. This involves Calculus and the hint was Recall the parametric representation of the unit circle as (cost,sin

Find the equation of a sphere if one of it's diameters has endpoints (-10,0,-6) and (4, 14, 8).

Find an equation of the largest sphere with center (5, 3, 6) and is contained in the first octant. Be sure your formula is monic.

Find the equation of the sphere centered at (−1,10,2) ( − 1 , 10 , 2 ) with radius 4.

Double integral - calculating area

Find an area bounded by a graph

Find the volume of the solid

Use Lagrange multipliers to find the maximum and minimum values of f(x,y)=5x+y on the ellipse x^2+36y^2=1.

Use Lagrange multipliers to find the maximum and minimum values of f(x,y)=5x+y on the ellipse x^2+36y^2=1.

find volume using triple integrals

Integrate the function f(x,y,z) = 1/( √(x^2+y^2)) over R1 is the region bounded from above by z = 2 and from below by the cone x^2 +y^2−z^2 = 0

How to find $u_{min}(d,r)$ if $xtan\theta - \frac{gx^2}{2u^2cos^2\theta} \geq r + \sqrt{r^2-(x-d)^2}$ for $d-r \leq x \leq d+r$

Calculating work done by force field ( multivariable calculus )

Particle moving through 3D space problem; calc III problem.

Show that.../ Evaluate

Differential Equation Question

Find Z(subx) and z(suby)

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RELATED QUESTIONS TO:

Matrices question. PLSSSSS HELP.

dentify the following surfaces as an elliptical paraboloid, hyperbolic paraboloid, a hyperboloid of one sheet, a hyperboloid of two sheets, a cone, a circular c

Identify the type of quadric surface defined by the equation and find all x, y, and z intercepts of the resulting graph.

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