You could get the result you want with one more step: restart; e1 := 2*sqrt(z*(2*r - z))*r -2*sqrt(z*(2*r - z))*z - 2*r^2*arcsin( (-r + z)/r); e2 := subs((z*(2*r - z))=g,e1); e3 := collect(e2,g^(1/2)); e4 := subs(g=(z*(2*r - z)),e3); Hope this is what you want. J. Tarr

Please see ?plot,options and look for labels. If you don't want a label on the y axis , you could achieve what you want by altering your plot command to: plot(f(x), x = -20 .. 20, labels = (["", ""])); Hope this helps. J. Tarr

Jacques, You make a very good point about “bloatware”, but perhaps code such as Marvin Ray Burns’ code and some that has appeared on this site should be made available and kept up to date for the benefit of all. The Application Center seems the right place for that code, but there may be difficulties about keeping it all up to date. For a variety of reasons, authors may not be able to do so. The only solution that I can think of is to make it shareware and allow volunteers to do the job. But that would mean a special area in the Application Center with some kind of logging system for the various pieces of code. Would Maplesoft provide that for free? Regards, J. Tarr

Take a look at Professor Robert Israel's Advisor package. Hope this helps. J. Tarr

Take a look at Professor Robert Israel's Advisor package. Hope this helps. J. Tarr

Alec,

This what appears on my machine, though the circumflex sits more closely on the x when seen in a standard worksheet;

> restart;

> xhat:=`#mover(mi(x),mo(^))`;

> xhat:=`#mover(mi(x),mo("^"))`;

>

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J. Tarr

Alec,

This what appears on my machine, though the circumflex sits more closely on the x when seen in a standard worksheet;

> restart;

> xhat:=`#mover(mi(x),mo(^))`;

> xhat:=`#mover(mi(x),mo("^"))`;

>

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J. Tarr

Alec, Try using what you posted and then try this xhat:=`#mover(mi(x),mo("^"))`; Sorry I misled you. J. Tarr

Alec, Try using what you posted and then try this xhat:=`#mover(mi(x),mo("^"))`; Sorry I misled you. J. Tarr

Yes, the hat does look as though it has been raised. Joe Riel's method in the thread that I mentioned is better and he gives a procedure to simplify repeated application. Here's how it looks when amended to produce hats on heads: MakeHat := x -> nprintf("#mover(mi(\"%A\"),mo(\"^\"))", x): alias(xhat = MakeHat(x), yhat = MakeHat(y)): examples: MakeHat(phi); MakeHat(y); xhat; yhat; Alec's method is basically the same as Joe Riel's, but without a pair of double quotes. Hope this helps. Sorry if my original post misled you. J. Tarr

Yes, the hat does look as though it has been raised. Joe Riel's method in the thread that I mentioned is better and he gives a procedure to simplify repeated application. Here's how it looks when amended to produce hats on heads: MakeHat := x -> nprintf("#mover(mi(\"%A\"),mo(\"^\"))", x): alias(xhat = MakeHat(x), yhat = MakeHat(y)): examples: MakeHat(phi); MakeHat(y); xhat; yhat; Alec's method is basically the same as Joe Riel's, but without a pair of double quotes. Hope this helps. Sorry if my original post misled you. J. Tarr

You may have missed it in that thread, but Paula Chinn pointed out that in 2D entry you can press x ctrl+shift+" and then insert the symbol that you want - in your case the ^ from the diacritical marks palette. See also Maple Quick Reference 2D Math Editing Operations, Keyboard Shortcuts and Operations. Good luck. J. Tarr

You may have missed it in that thread, but Paula Chinn pointed out that in 2D entry you can press x ctrl+shift+" and then insert the symbol that you want - in your case the ^ from the diacritical marks palette. See also Maple Quick Reference 2D Math Editing Operations, Keyboard Shortcuts and Operations. Good luck. J. Tarr

I prefer to rely on Maple’s definition (see? sphericalcoords), which has a nice little figure to illustrate spherical coordinates. A minor curiosity is that Maple’s definition does not conform to ISO 31-11: it uses the “American” system. The differences are illustrated in wikepedia. J. Tarr

Same problem with Firefox 2.0. But thank you for the tip that it was available. Regards, J. Tarr