APMathNerd

I need a separate audio output like this one also... anyone know where I can find one?

http://www.ebay.com/itm/New-HDMI-Male-to-VGA-With-...

I just got an iPhone 6, and I was setting my alarms, but I realized I had to change the sound on every one. Is there a way to change the default sound so I don't have to change it every time I make a new alarm?

Note: Please do not give me answers to the problem. I'd really like to figure out the actual answer by myself. I have no programing/coding experience, so I'm having trouble even thinking about where to start with this problem though, so a hint as to a process I should follow would be really great! I'm thinking I need to use a for loop of some sort, but past that, I don't have the faintest clue where to go.

The following expression is exactly equal to zero:

200 - Sigma(i=1 to 2,000) 0.1 =0

Write a MATLAB algorithm to compute the expression above by repeated subtraction, and compare the answer to the exact answer of zero. In other words, compute the absolute value of the error between MATLAB’s answer and zero. (Hint: use the abs() command.)

I'm looking for something I can use to organize documents, but I would also like to write on it instead of type (because I am taking a lot of math/physics classes that make it difficult to use a regular keyboard). Any suggestions?

Consider a simple pendulum suspended from infinity (that is, very far from the Earth’s surface)

with the pendulum bob near the Earth’s surface. What’s the longest period of this pendulum? (Hint: you will need to explain why the period is longest when the amplitude is smallest).

I recently got an Apple Magic Mouse. For the most part, I really like it, but I have one problem.

When I want to right click, I have to remove my left finger from the mouse, which is very annoying. On a normal mouse, I would simply leave my finger resting on top of the left button, and click down on the right button.

Is there any way to allow me to leave my left finger resting and be able to right click? I've tried Better Touch Tool already, but I can't seem to get that to work either, so if anybody has instructions using that program, that'd be appreciated also :) Thanks!

proportional to the instantaneous velocity is:

m*dv/dt = mg - kv

where k is a positive constant of proportionality.

a) Solve the equation subject to the initial condition v(0)=A (a constant)

b) Determine the limiting, or terminal, velocity of the weight.

c) if the distance, s, is related to the velocity ds/dt = v, find an explicit expression s if it is further known that s(0)=B (a constant)

Can anyone help? I've been stuck on this problem for a while...

The indicated y1(x) is a solution of the associated HOMOGENEOUS equation. Determine a second solution of the homogeneous equation and a particular soution of the nonhomogeneous equation.

(meaning I need a solution y=c1y1 + c2y2 + yp)

y'' - 4y' +3y = x ; y1(x) = e^x

So far, I found the second solution of the homogeneous equation to be 1/2e^(3x), however I have no idea where to go from here.

My book says if the g(x) is in the form of a linear function of x, then yp is in the form Ax+B, but I have no idea how to find it... Can anyone help?

...and is perpendicular to x+3y-2z=3

I have a vague idea how to do it, but nothing solid.

Can't figure this out for the life of me. My teacher sent out solutions, but I still don't understand it. The answer should be ‖𝑤⃗𝑝𝑎𝑟𝑎𝑙𝑙𝑒𝑙‖= sqrt((−12)^2+(−35)^2)=1.58 𝑘𝑚/ℎ𝑟.

A 100-meter dash is run on a track in the direction of 𝑣⃗=2𝑖̂+6𝑗̂. The wind’s velocity is given by 𝑤⃗=5.5𝑖̂−3.5𝑗̂. The rules say that a legal wind speed measured in the direction of the dash must not exceed 5 km/hr.

Can anyone explain this?

If a power series ∑a(sub k) * x^k converges at x=7 and x=8, then it converges at x= -7.

If the statement is true, tell why. If it is false, give a counterexample.

Use Taylor series to evaluate the limit:

lim(x->0) (x-arctanx)/(x^3)

I keep getting infinity, but I don't think that's correct. Please explain how to find the limit! :)

Sigma (n=1 to infinity) Cos(pi * n) / n

I'm pretty sure it converges, but I can't show why... can anyone explain it?

A couple puts $750,000 into a retirement account paying 4.5% annual interest. They estimate that they will need to withdraw $75,000 a year to live on. Assume that on the last year interest is paid, and then the $75,000 is withdrawn.

Find a non-recursive formula for Sn, the amount of money left in the account after n years. First, find a pattern for S1, S2, S3, and S4. For example: S1 = 750,000(1.045) - 75000

The recursive formula is easy to find:

S(n) = S(n-1) * 1.045 - 75000

But how would I turn this into an explicit formula?

On the common application, there is a section for AP exam scores. Currently I have:

AP Calculus AB - 5

AP Environmental Science - 4

AP Statistics - 4

AP Macroeconomics - blank (I have not taken the exam yet)

AP Microeconomics - (same as Macro)

AP Physics - (also haven't taken it yet)

However, I also took AP World History and AP Chemistry, but got 2s on both of them. Should I add them to the list?

I took an SAT practice test, and I just need someone to grade it please!

Prompt:

"Everything comes if a man will only wait." - Benjamin Disraeli, Tancred

"Destiny is not a matter of chance, it is a matter of choice; it is not a thing to be waited for, it is a thing to be achieved." - William Jennings Bryan, Memoirs

Should we wait for good things to come, or is destiny not something we can wait for? Plan and write an essay in which you develop your point of view on this issue. Support your position with reasoning and examples taken from your reading, studies, experience, or observations.

My essay (Note, I originally hand-wrote this. I left all spelling mistakes in. Also, I can't indent here, so I skip a line instead, but when I originally wrote it, I indented for new paragraphs instead of skipped lines):

When I think of people who are considered successful, I don't think of people who simply waited for their achievements. People such as Albert Einstein, Barack Obama, and James Cameron - people who have been successful in entirely different fields - all had to work hard to achieve greatness. Therefore, William Bryan was more correct when he said that "Destiny ... is not a thing to be waited for..." In the lives of more average people, this philosophy still holds true in areas such as applying to universities, or being successful in one's career.

There is a reason that top ranking universities such as Harvard, Princeton, or Stanford are difficult to be accepted to. The people who apply for these schools are all people who strive for greatness. Nobody who applies to those schools simply fills out the application while meeting the minimum requirements and expects to be accepted. People have to work above and beyond the requirements to show that they deserve to recieve an acceptance letter from these schools.

The same can be said about the job market. In today's economy, being hired for a job is not as simple as filling out an application and waiting. It is expected that people show that they deserve the job over all other applicants. Even after recieving a job, the expectation for one to show their greatness doesn't cease. In order to truely be great at what you do, you have to continuously show your greatness. After all, Barack Obama didn't become the President of the United States by simply running and expecting people to vote for him.

Although an argument can be made for the contrary - a poor person recieving large tax breaks for example - many of these things simply occur by chance or by results of other people's hard work. This can be seen in lottery winners, or citizens who benefit from political legislation. For these reasons, I agree with William Bryan.

This was timed. 25 minutes for planning and writing the essay.

I just took AP calculus last year (I'm entering my senior year of high school). I tutored Algebra 2 all year for $20/hour, but I'm looking for a bit more money. I got As both semesters in Calc (98% overall first semester, 99% overall second semester), and a 5 on the AP exam. I'll be taking Calc 2, 3, and 4 respectively in the Fall, Winter, and Spring quarters at my local community college. With these qualifications, along with the fact that I got plenty of business charging $20/hour for Algebra 2, would $30/hour be reasonable? I'd be tutoring mostly other high school seniors. Also, I would only be doing 1 hour long sessions either once or twice per week per person.