# mando

Most popular questions and responses by mando
1. ## linear algebra

Find x such that the matrix is equal to its own inverse. 3,x -2,-3

2. ## history

which war did the most americans die - american revolutionary war?, WW1, US civil war? or WW2?

3. ## unit tangent vector

Find a unit tangent vector to r(t)=e^(2t)i+e^(-1)j+(t^2+4)k at (1,1,4).

4. ## linear algebra

Use an inverse matrix to solve each system of linear equations. A) x+2y=-1 B)x+2y=10 C)x+2y=-3 x-2y=3 x-2y=-6 x-2y=0

5. ## linear algebra

Use an inverse matrix to solve each system of linear equations. A) x+2y=-1 B)x+2y=10 C)x+2y=-3 x-2y=3 x-2y=-6 x-2y=0

6. ## linear algebra

Use an inverse matrix to solve each system of linear equations. A) x+2y=-1 B)x+2y=10 C)x+2y=-3 x-2y=3 x-2y=-6 x-2y=0

7. ## Calc

Find the point in which the line x=1-t, y=3t, z=1+t; meet the plane 2x-y+3z=6

1. ## unit tangent vector

oh ok, now i get it.

posted on September 28, 2011
2. ## unit tangent vector

how does 1/e equal to 1? ∥r'∥ = √(4e^4 + 1 + 4)

posted on September 28, 2011
3. ## unit tangent vector

r(t)=e^(2t)i+e^(-t)j+(t^2+4)k at (1,1,4)

posted on September 28, 2011
4. ## unit tangent vector

oh yes it is.

posted on September 28, 2011