Recent content by Trigger

Please help with the following problem: Do not know where to start! Give an example of two sequences Xn(sum from 1 to infinity) and Yn(sum from 1 to infinity) where lim (as n tends to infinity) of (Xn + Yn ) exists but lim (as n goes to infinity) of(Xn +Yn) does not equal lim (as n goes to...

I have made out a Cayley Table for D4, but do not know how to calculate the subgroups. Please help!

Calculate all the subgroups of D_4. Which of them are normal subgroups? (It can be shown that any subgroup containing half the elements of a group G is a normal subgroup, and if a has order 2 then {e,a} is a normal subgroup iff a commutes with all elements of G.) {e,R^2} happens to be a...

What about Hamilton? Surely he deserves a mention.

Would f(x) have to be -x squared if f(1/x) is to be proportional to 1/x

Please help with the following problem: Find an example of a finction f:R-R where lim x tends towards zero of xf(1/x) is not zero

Please help me out with the following problem. I have only just begun a mechanics course and am finding it extremely difficult! (a)A cart with initial mass M and a load of sand 1/2M loses its sand at the rate k kg/sec. the cart is puled horizontally by a force F. Find the differential...

Solved the first part of the problem, i.e angle=45 degrees. I realize that the tranquiliser should be fired at the monkey and not below it as the tranquiliser falls like the monkey but really need help to find the minimum velocity needed. PLEASE HELP!

If there were no gravity then the monkey would not experience an accelearation of 9.81 towards the centre of the Earth and the bullet would not fall as it flies through the air also.

need a better hint!

Please help with the following problem: Assume a monkey let's go of a tree when a tranquiliser is fired. At what angle should the gun be pointed so that the tranquiliser hits the monkey while in free fall? Neglect size of gun and monkey. Let Xm,Ym = monkey's initial position, Vo=magnitude...