Recent content by pillar

Sorry about the bump, thanks for checking my work.

AB is a Vector. Yes those are parametric equations for the curve. I don't know how to solve 3, I need some help.

1.Consider the process A[1,1] and B [-1,4]; let Vector U=AB 1a.Write u using components. Write u using the standard basis. 1b.Draw u as a position vector. Find u. 1c.If C [1,1] and D [5,y], then find the value of y so that AB is parallel to CD. 2. Find the length of the curve 2t2 3t2 ...

1a. The electric field within the membrane separating the inside and outside of a biological cell is approximately 8.1 {MV/m} and is essentially uniform.If the membrane is 13 nm thick, what is the potential difference across the membrane? Express your answer using two significant figures...

Yes I meant intersect, thanks for your help.

Homework Statement Find at what points these two functions intercept. y=x+1 y=9-(x^2) Homework Equations x+1=9-(x^2) The Attempt at a Solution (x^2)-x-8=0

So when using a perfect square I would divide the linear middle term by 2 and put the x in squared ( ) along with that term?

Ok thank, now what about this problem? \frac{(x)^3}{(x+4)^{2}} will disintegrate into x+4=\frac{Ax+B}{(x+4)^{2}} I'm not sure where to go from there, to get the values of A & B.

1/(x+5)^2 (x-1) B=(-1/6) C=(1/36) I can't find the value of A, what method do you use to find it?

Thanks I think I have a better understanding.

This a techniques of integration question, and I'm wondering how do you know when to use integration by parts on a problem? My book says this bout the Integration by parts procedure. If f(x) is a product of a power of x and transcendental function then we try integration by parts. Can...

How when do you know when to use cosα in the x component or y component? I thought you only use cosα on the x component since it's the x coordinate on the unit circle. Can somebody give me an example, I would appreciate it.

Sorry ln|cos(x)|+ C+ must be the integral of tan(x) then.

1.For example a.http://img40.imageshack.us/img40/9514/problem2m.png b.http://img193.imageshack.us/img193/4250/problem2ans.png When do you use ln in integrals?

Apparently model my book goes by for choosing u is LIATE (Logmetric.Inverse Trig.Algebraical.Trig.Exponential function)