Recent content by innightmare

no pie is inside the paranthesis next to Z. I was thinking of doing the chain rule but wasnt sure. but its sin -square and the angle is pie next to Z Is the answer sin over two *pie

Homework Statement What is the derivative of sin^2(pie*Z) with respect to Z Homework Equations The Attempt at a Solution I think the answer is pie/2*sin(pie*Z) Is this correct? I keep getting confused with whether or not I should involve the 2 or not of should just leaving it...

thats what i did. sorry but i don't have matlab, which was why i wrote it out completely. anyhow, that's what i did, but that answer in the book for the eigen value was 4, 3 -2 OK-so how do i go from here inorder to get my eigen vector? i understand how to get the eigen vector with a two...

(3, 1, 1) second row: (1, 0, 2) third row: (1, 2, 0) which i then convert into to (3-lamda) , -lamda, -lamda : all of which are diagonally. -(3-lamda)*2x2matrice of top row: lamda, 2 second row: 2, lamda -1*(-(2x2 matrice of top row:1, 1 second row: 2, lamda)) -1* 2x2 matrice of top...

I am having a hard time with the 3x3 matrice with finding the eigen value. I know its similar to finding a the determinant. But for some reason, I do get the right answer/values just not with the right signs. How do I know which sign to use? I think with finding the eigen value, its a...

Also, do I solve a 3x3 matrix the same way as i do with a 2x2?

my values for the lamda's were 0 and 5 my 2x2 matrice was 4, 2 and for the bottom was 2,1 for the first lamda=0 Ill plug it into the formula, A-lamda*I which is (4 2/2 1) - (0 0 /0 0)= (4 2/2 1) Ill do the row-reduction to get ONLY the top row of 1, 1/2. Which Ill now...

Homework Statement Use direct multiplication to show that for each of the following matrices A, the given vectors v1, v2, and v3 are eigenvectors of A and to find the eigen values lama1, lama2, and lama3 of A: A=top row: (2 -1 3) second row: (-1 6 -1) third row: (3 -5 2)...

Homework Statement Find the eigenvector for each of the matrices Homework Equations I have a 2X2 matrice. (4, 2) which are on the top and (2,1) which are on the bottom. I understand how to get the value of the eigen, but I am confused about getting the vector. The Attempt at a...

Is it mv(initial)=mv(final)?

I think its this equation: mgh +1/2mv^2=mgy +1/2mv^2, using my kinetic energy as my velocity should be:(I THINK) v=radical of 2*g*h Is this correct?

Homework Statement 1. Homework Statement [/b] A 10.0g bullet is shot through a 1.0 kg wood block suspended on a string 2.0m long. The center of mass of the block rises a distance of 1.0cm. find the speed of the bullet as it emerges from the block if its initial speed is 450m/s.Homework...

Ok, this is the problem:A diver comes off a spring board with arms straight up and legs straight down, giving her a moment of inertia about her rotation axis of 36 kgm^2. She then tucks into a small ball decreasing this moment of inertia of 7.2kgm^2. While tucked she makes four complete...

Im a bit confused. I am working on a problem for linear momentum where I need to find the final angular speed, which was .8. But now I need to convert into revolutions. My t=3.0s

Homework Statement I need to know how to convert angular speed into revolutions Homework Equations W=2*pi/60 sec, but that's for rad over second The Attempt at a Solution w=2*pif