Recent content by kingkong69

Find a basis and the dimension for the subspace of R^3(3D) spanned by the vectors {(0,1,-2),(3,0,1),(3,2,-3)} The dimension is 2 regardless if i put the vectors in row space or column space form. But to find the basis I need to put it in row space form. Can anyone please explain when I...

Hi thanks i get u. i have a question for you. when I am given a set of vectors, i am asked to find a basis for it. I solve it to Reduced row echolon form and get the basis. But sometimes i have to write the vectors in columns, sometimes in rows for the matrice. Sorry for being unclear Do i...

The set is (1,3),(-1,2),(7,6) it is in R2 so I don't get why there are 3 elements. I assumed they are not vectors but points instead. but if they are points then it becomes a line, and the answer is that its dimension is 2, and a basis is (1,0) and (0,1) Could someone explain this? Thanks

Hi I know the dimension is 3, two polynomials has dimension 2 only so it cannot span P2. How would I go about showing it if I were to write it down mathematically? Thanks

wat semantics?

haha ye I am confused i was working through maplesoft, http://img696.imageshack.us/img696/9376/123123123ii.jpg

find the area of the triangle with vertices (-1 2 -1 2) (-1 2 -1 1) and (2 -1 2 2) its 4 d Im confused thanks in advance

hey sorry didnt answer you do you want me to explain it or you ok with it?

Alright I found it! Thanks a ton again!

Hi tiny-tim! Thanks for pointed my mistake out, is the rest correct?

http://img20.imageshack.us/img20/9443/ssssnm.png parallel and perpendicular axis theorem for moment of inertias So i solved the Moment of inertia for the large square through the perpendicular axis through a, (1/3)*M*(l^2), where l is 4a/2=2a, using the perpendicular theorem, Ixx+Iyy=Izz, we...

Find the moment of inertia of a wire, AB, of mass M and length pi*a, which is bent into a semicircle, about AB. Mr^2/b] [b]The mass of the wire is M=pi*a*m, where m is the mass per unit length of the rod. Then a small element, ds is regarded, of the circumference of the semicircle as being...

got it, thanks a lot guys

1. Homework Statement Find the time taken to reach half the maximum angular displacement in a PENDULUM. Given that the bob hanging at rest was given an initial velocity of 2ms, and the length of the string is 6m. 2. Homework Equations finding the angular velocity using sqrt.(g/l)...

Hey there, [SIZE="5"]The Question Points A,B,C,D, and E lie in a straight line. AB=BC=15 cm, CD=10 cm and DE=20 cm. A particle is moving with SHM so that A and E are the extreme positions of its motion. The period of the motion is 0.2s. Find the time the particle takes to get from B to D i)...