This should be a simple question. But sadly I couldn't figure it out on my own

:-(

I know how to get the multivariate Taylor series expansion of a function f of arguments X[1] and X[2], about zero, and to, say, the third order,

mtaylor( f(X[1],X[2]), [X[1],X[2]], 3 );

   f(0, 0) + D[1](f)(0, 0) X[1] + D[2](f)(0, 0) X[2]

        1       ...

I was wondering if anyone could explain the theoretical reason (ie derive the
expression for the probability) why the optimal solution for the secretary problem
with n=100 is equal to 100/exp(1) and the probability is (1/exp(1))*100

Robert Israel tend to be good at these kind of things....:-)

The problem can be stated as follows (wikipedia):

 1. There is a single secretarial position to fill.
 2. There are n applicants for the position, and the value of n is known.

hello everybody

i want to know how can i solve this equation

64(a-b+c+d+e+f+g)=32(b-a-c-d-e-f-g)=16(7c- a-b-d-e-f-g)=8(15d-a-b-c-e-f-g)=4(31e-a-b-c-d-f-g)=2(63f-a-b-c-d-e-g)=127g-a-b-c-d-e-f

please heeelp me

Is there a way that I can plot this in Maple?

The question is:

Shade the region of the complex plane for which  (I*z-1)/(z-I)  is real.

This is real when x² + y² = 1 and (x,y) ≠ (0,1). How can I plot both of these things on one plot in Maple?

Codewords:=proc(L,x,y,z)
local
List:=[];

if L=S then
if x=1 then

print(`A 1 j k`);
else
print(`A 0 j k`);
fi:


if y=1 then

print(`B i 1 k`);
else

print(`B i 0 k`);
fi:
if z=1 then
print(`C i j 1`);
else

print(`C i j 0`);
fi:
fi:
if L=A then
if x=1 then

print(`S 1 j k`);
else

print(`S 0 j k`);
fi:

if y=1 then

print(`C i 1 k`);
else

print(`C i 0 k`);

Hi to you all, I'm brand new to this forum and I hope you could help me.

I wrote a Maple14 worksheet which perform data analysis, reading information from a set of file (usually 50 files) coming from an acquisition device. They are text file but the acquisition software produce them in the form:

namefile-0Ep.irr, namefile-1Ep.irr .... namefile-49Ep.irr

where "namefile" is the name I choose when i start the acquisition.

In order to perform...

I solve system of ordinary differential equations numerically by method=rkf45 (Runge-Kutta Fehlberg method).

1. Maple 13 installed on the Linux x64. Processor – AMD Phenom (4 cores). When Maple computes it uses only one core but other three cores stand idle. How to impel to compute other cores?
2. When I solve system of ODE a calculation reaches closely 1 ns and stops. Maple writes that value of Maxfun exceeded. But I need solve system up to 10 μs....

Hi! I've tried to figure out what to do with plot([sin^2(x),line(x)],x=-2*pi..2*pi,y=-.1..1.1,tickmarks=[spacing(pi),default});

Warning, unable to evaluate 1 of the 2 functions to numeric values in the region; see the plotting command's help page to ensure the calling sequence is correct.

original problem is f(x)=sin^2(x). I had to plot with the tangent line.

I played aorund a bit with the "Insert Table" command and it seems to create just an inert object that cannot be accessed or operated upon except directly by typing into its boxes. Is that true? Is it just for word processing?

Hello

i want to solve this equation

but i couldn't

please help me

( x mod 5656 = 565 ; x mod 565 = 56)

Why the command

does not return eps???

How can I simplify expressions like this?

I am new to this, so should be simple.

i define a function p

> p := proc (x) options operator, arrow; 10*x-20*piecewise(x < 2, 0, 2 <= x, x-2) end proc;

sendtomap1.mw, sendtomap2.mw, wood_riess.zipHi! I've written a program for my work to obtain "chi square" for a range of data. Can someone tell me why my first example which I have attached and I've called it "sendtomap1" works correctly, but the second one "sendtomap2" has an error?...

why won't VectorCalculus[Jacobian] accept vectors?

... to prevent me from frying my system? or is it an unnecessary restriction?

Here's what I mean:

Fvec := Vector([x[1]*x[2],3*x[3]]);
Xvec := Vector([x[1],x[2]]);
Flst := [x[1]*x[2],3*x[3]];
Xlst := [x[1],x[2]];
VectorCalculus[Jacobian](Fvec,Xlst);
VectorCalculus[Jacobian](Flst,Xlst);
VectorCalculus[Jacobian](Flst,Xvec);

Error, invalid input: too many and/or wrong type...

I want to plot a graph for the two variable function

over the region x = [-2,2] and y = [-2,2].

How I can create a coloured [or with different shades of grey to see the difference in a black and white printout] "contour" plot of this function over the same reagion? Using 8 contours and in such a way that it is illustrative...