edgar

collect...

Answered: edgar 669

August 31 2008

0 0

There is also collect to do all powers at once f := (a*x+b)*(c*x+d)^2; f := (a*x+b)*(c*x+d)^2 coeff(f,x,2); b*c^2+2*a*d*c collect(f,x); a*c^2*x^3+(b*c^2+2*a*d*c)*x^2+(2*b*d*c+a*d^2)*x+b*d^2 --- G A Edgar

maximize...

Answered: edgar 669

August 30 2008

0 0

Try the "maximize" function, and see if it tells you what the maximum value is... > maximize(x^2 - 3*x+y^2 +3*y+3,x=2..4,y=-4..-2,location); 11, {[{x = 4, y = -4}, 11]} --- G A Edgar

As-is?...

Answered: edgar 669

August 27 2008

0 0

Probably you would not use that formula as-is. But if you want to ... n has components, say (n_x,n_y,n_z) and r has components, say (r_x, r_y, r_z), so do the dot product of these vectors. n dot dr becomes n_x*dr_x + n_y*dr_y + nz*dr_z --- G A Edgar

The reason ......

Answered: edgar 669

August 24 2008

0 1

I think here is the reason for the answer ... the "trick" substitution that works in the original problem does not work on either of the two terms when it is expanded...

> fexpanded := expand(sqrt(t^5+6*t)*(5*t^4+6));

> map(int,fexpanded,t=0..1);

> map(int,fexpanded,t=0..u);

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Here is a...

Answered: edgar 669

August 07 2008

0 0

Here is a start -int((tan(theta))/(sec(theta)*(2*cos(theta)-1)^(1/2)*(1-cos(theta))),theta) = (sqrt(Mgh/A))*t; combine(%); Now you still need to convert a difference of arctanh's in to arcsech --- G A Edgar

Not sure what martman...

Answered: edgar 669

July 29 2008

0 0

Not sure what martman means... matrix and not Matrix? If A is a matrix, and you type A, you just get back A. So in order to see the matrix you should type op(A) That is one thing martman might mean... --- G A Edgar

Long division...

Answered: edgar 669

July 24 2008

0 0

Use long division of power series. It is like long division of decimals, but no carrying. I hope you are not the victim of "modern" education where you have little idea of the theory behind long division, because it has been deemed "obsolete" due to calculators. --- G A Edgar

No...

Answered: edgar 669

July 07 2008

0 0

No, 'Warning, solutions may have been lost' means only that Maple may have missed some solutions, not that Maple definitely missed some solutions. The method to investigate whether there are other solutions will vary from case to case, so you (the user) has to do it, not Maple. --- G A Edgar

identifiers...

Answered: edgar 669

May 18 2008

0 1

Mathematicians use one-letter variables for everything, but computer programs (including Maple) need not do that. So how about using variables named vx and xEngine and things like that? --- G A Edgar

After you do save nx; is...

Answered: edgar 669

November 25 2007

0 0

After you do save nx; is there a file nx.* ? If not, there is no use trying to load it again. Maybe your permissions don't allow Maple to write in the default location. On my Mac, I always to something like currentdir("/Users/edgar/tmp/"): before trying to save a file. That is the full pathname of the directory where I want to put such temporary files. You can use some other location suitable for you. --- G A Edgar

ok...

Answered: edgar 669

November 08 2007

0 0

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functional equation...

Answered: edgar 669

July 27 2007

0 1

Your expression is the very definition of the pochhammer symbol She(?) didn't say n is an integer... If so, use the functional equation GAMMA(z+1) = z*GAMMA(z) repeatedly ( n times) to get GAMMA(z)/GAMMA(z+n+1) a product of n+1 factors.