Recent content by PAR

Makes sense, so is it 2-ethyl-1-butene? Does the fact that it contains a double bond take priority over the longest carbon chain?

Homework Statement Name the following (organic) molecule: http://img827.imageshack.us/img827/1883/organicmolecule.png Uploaded with ImageShack.usHomework Equations The Attempt at a Solution Would this be 3-pentene? The root has to be "pent" because that's the longest carbon chain, right?

Homework Statement Say you have a sphere of radius r centered at the origin, and a vector v <r,0,0>. Let v' be the vector v rotated about the y-axis by angle theta. What is the shortest distance between the end of the vector and the z-axis? Homework Equations The Attempt at a Solution I...

Just figured it out, you can close this thread.

Homework Statement Find functions f and g such that: f belongs to O(g) AND f does not belong to \Theta(g) AND f does not belong to o(g). Homework Equations The Attempt at a Solution Another way to phrase the question is replace the statement "f does not belong to \Theta(g)" with "f does not...

Another way of doing it is to find where f(t) and g(t) intersect and then evaluate the equations at values a little bit off those intersection points to find which one is higher So i suggest you solve: \frac{40t}{(t^2+1)} = \frac{45t}{(t^2+8t+7)} Step one should be multiplying both...

Homework Statement The problem is to find the inverse laplace of \frac{s^2-a^2}{(s^2+a^2)^2} I am supposed to use the residue definition of inverse laplace (given below) The poles of F(s) are at ai and at -ai and they are both double poles. Homework Equations f(t) =...

I don't understand what the question is asking: "Show that the conditional probability that the first ball selected was white is w/(w+b+n)" This doesn't make any sense. The probability that the first ball selected is white is clearly w/(w+b) unless i am horribly, horribly mistaken. Reread the...

I've done the entire problem a second time through and I get the same answer. My main concerns are: What is the initial curve and why? y = 1? When solving the problem in terms of x,y (the later solution), what is G(y/x)? I've tried applying the initial condition but I just get an...

Your s(t) is correct, now take its derivative to find v(t). yes, you are missing a constant in v(t) EDIT: Sorry I said that your s(t) is correct, sorry it isn't, the "t" term is wrong, you need a constant coefficient, so you need a Kt not a t. But using the initial conditions given to you...

almost, v(t) is incorrect, redo the derivative of s(t) to find the correct v(t)

Recap: You know that s(t) is a cubic because when you take two derivatives of a cubic you get At + B which is the same form as a(t) = 24t + 6. So using the initial conditions eg. s(0) = 0, the a(t) formula, s(t) = q*t^3 + b*t^2 + c*t + d, and knowing that s' = v and s'' = a, solve for q,b,c...

no, s = q*t^3 + b*t^2 + c*t + d

The inverse of the power rule is integration. Since you know that s = q*t^3 + b*t^2 + c*t + d all you need to do is solve for q, b,c and d using derivatives.

Well either you haven't been paying attention in class or there is something seriously wrong with how they are teaching you. Since you haven't learned integration, the only possible way I can see you finding s(t) by derivatives only is knowing that since a(t) = 24t + 6, all of the integrals of...