Hiya,
Just completed this task on rulers method. Can you please check it?
Question:
Use Eulers method to obtain a numerical solution for:
dy/dx = y/x +x^2-2
x=1, y=3
range 1.0 to 1.5
intervals of 0.1
Thank You
I don't know if this is possible:
i have a large set of stock data from Yahoo!
i want to filter on all stocks which have risen 20% on 30 days, and compare the homogenity of the these stock features (before that period) between that dataset and its heterogenity with the other data (or eg stocks...
I have X, a normally distributed random variable with mean 4. If 80th percentile of X = 4.8, then sigma = ?
I did .80 = (4.8-4)/sigma then solved for sigma
I got sigma = 1. Just wanted someone to check since it equaling 1 doesn't make sense to me.
I solved a problem but wasnt sure if my solution was correct. The problem is number 30 in the textbook. I am attaching the question and solution below. Does my work make sense?
Sphere Work (the picture I drew is an xy trace of the sphere, if that isn't clear)
http://i.imgur.com/WMWUp1D.jpg?1
The sphere problem asks you to find the volume of the region bounded by the plane z=1/2 and a ball with radius 1 centered at the origin using spherical coordinates. I'm not even...
Okay, so I have been working on this problem but want to know if I am correct or on the right lines.
I set up the Hamiltonian
Took the derivatives with respect to u and x but I am a little unsure about what I do after the boundary conditions and if I am correct with what I did with the scrap...
For the system of equations below, check whether the two conditions in the Implicit
Function Theorem are satisfied at point A = (x, y, t) = (1, 1, 0), where x and y are
variables and t is a parameter. If yes, find the expression for &dx/&dt and evaluate it at A.
EQ#1 xy2 − y = 5t
EQ#2...
Can someone check my work and see what I did wrong. This is an initial value problem.
Here's the question and my answer:
Here's my work. Sorry if it is hard to read.
Is there a way to check if a saddle point I calculated in a three variable function is OK?
The function is f(x,y,z)=(x+z^2)e^(x(y^2+z^2-1)) and I got a saddle point in x=1, y=0, z=0. f(1,0,0)=1/e
Same as the title, please figure out what is wrong for my working ,,
questions:
1)A helicopter takes off from a point 120m away from an abserver located on the ground, and rises vertically at a constant rate of 2.5m/s.At what rate is the elvation angle of the observer's ine of sight to te...
Hello, first post here!
I have an upcoming calc exam and wanted a way to double check my answers.
How can I confirm I have the correct answer for a function written as the sum of a power series (centered at 0)
For example how can I confirm that f(x)=1/(2-x) is equal to the sum of (x^n)/2^(n+1)...
Does my proof work?
The question is prove: \sum_{n=1}^{\infty}(\frac{1}{nx}) diverges for any value of x.
I initially thought it diverges because the sum 1/n is divergent... but please check my proof.
We know that:
\sum_{n=1}^{\infty} \frac{1}{n} > M' for every n>N
\sum_{n=1}^{\infty}...
So my instructor stuck a couple of these questions into our exams and it says:
Evaluate the function:
1) Find f(-3) when f(x) =2x^2+3x+5....Do I just need to substitute -3 for the x's and see what I get?
Also, I get a couple questions that says:
Use synthetic division to determine f(-4), if...
Hi everyone! I'm taking a Calculus course and have hit a couple snags. The following are the problems I have (first two are to be implicitly differentiated, the third differentiated normally by use of the quotient rule), followed by what I tried to solve each. If anyone could guide me so that I...
The question is: Prove that a sequence {a_n} converges to 0 if and only if the sequence of absolute value {|a_n|} converges to 0.
My Proof (which I am a bit skeptical of):
We will start with the condition that: a_n \rightarrow 0 ... so |a_n - L| < \epsilon for n>N. The limit is given as 0...
Hello there I was just wondering if you guys could check my answers:
1)
Let g be a function such that g(-1)=1 and -1 ≤ g'(x) ≤ 1/2 for -6 ≤ x≤ 5 and for .
a. Use the RTP to find upper and lower bounds on g(3).
b. Use the RTP to find upper and lower bounds on g(-4).
So for (a) i got:
-3≤ g(3)...