I have selected the "Worksheet HTML" option, is that the way? at any rate, "Filtered HTML" doesn't work either  for me.

<maple>sum(cos(x^2)/sin(exp(y)),x=1..infinity)</maple>

I used to be able to do that, I think. Could it be something about the security settings in the browser or something?

I was drawn to this thread by a keyword search, hoping to find help about how to post images. I'm having problems posting images in sizes other than full size. Anyhow, what I want to say now is just that...

... it so happens I recently posted a suggestion to add search options to the mapleprimes search engine, such as search by date.

A more versatile search engine would make it easy to establish whether the post is missing or not. Just a thought.

So I see it's not just me who finds it so difficult to post math on mapleprimes. The only way I have mastered is to post a picture:

Correction: not even that works for me today!!

Just one of those days...

<a href='http://www.mapleprimes.com/viewfile/3517'><img src='http://www.mapleprimes.com/scripts/image.php?image=http://www.mapleprimes.com/files/9249_mapleprimes_post14_image.jpg&width=300&height=300'/></a></a>

Thanks to both of you for these tips. I'll start saving on my disk too. I just recently acquired quite a bit of extra space (an overreaction to minor loss of data after a drive failure), so I may as well use it. I'll try to save as PDF, I do it sometimes with cutepdf, but not systematically. And I'll look up total commander and krusader. I'm currently using Unreal Commander (windows) and Dolphin (linux), but I'm very open to suggestions. Actually I also need a decent file manager for my collection of pdf articles which has grown out of control in the last few years. So thanks a lot for the tips, I'll follow them up.

Patrick

the typo is actually in the call to subs and not in my calculation by hand. The lambda was missing from the third argument below:

subs( q-b=-mu*(f(x)-c), eta(c)=lambda*(f(x)-c)/(f[x]-q), f(x)-c=eta(c)*(f[x]-q)/lambda,eval(M));

So that substitutes the lambda and the mu into the matrix. I still need to substitute nu according to lambda*f[x]-eta(c)*f[x,x]=nu. My first attempt below has not worked:

subs( q-b=-mu*(f(x)-c), eta(c)=lambda*(f(x)-c)/(f[x]-q), f(x)-c=eta(c)*(f[x]-q)/lambda, lambda*f[x]-eta(c)*f[x,x]=nu,eval(M));

Now I'm going to play around with this until I truly understand how to use subs.

Thanks to all for your great help.

the typo is actually in the call to subs and not in my calculation by hand. The lambda was missing from the third argument below:

subs( q-b=-mu*(f(x)-c), eta(c)=lambda*(f(x)-c)/(f[x]-q), f(x)-c=eta(c)*(f[x]-q)/lambda,eval(M));

So that substitutes the lambda and the mu into the matrix. I still need to substitute nu according to lambda*f[x]-eta(c)*f[x,x]=nu. My first attempt below has not worked:

subs( q-b=-mu*(f(x)-c), eta(c)=lambda*(f(x)-c)/(f[x]-q), f(x)-c=eta(c)*(f[x]-q)/lambda, lambda*f[x]-eta(c)*f[x,x]=nu,eval(M));

Now I'm going to play around with this until I truly understand how to use subs.

Thanks to all for your great help.

very useful indeed, I shall keep a record of this one. thanks very much acer.

Patrick.

very useful indeed, I shall keep a record of this one. thanks very much acer.

Patrick.

wow, thanks jakubi, this is great, so after all, this method is able to handle even my messy matrix. I don't know why I wasn't able to get that, I did make several attempts -- I didn't know you could do several substitutions simultaneously, thanks so much for pointing this out.

The typo is precisely the reason why I  wanted to make the substitution with Maple commands. The formula's okay on my piece of paper and then all wrong after I type it in. Maple's a wonderful assistant in that.

so jakubi once again I must thank you very much for your great support with this substitution. It'll allow me to run the  worksheet over and over with some confidence.

And congratulations on your 1,000th post -- a landmark! I'll have a drink to your health.

wow, thanks jakubi, this is great, so after all, this method is able to handle even my messy matrix. I don't know why I wasn't able to get that, I did make several attempts -- I didn't know you could do several substitutions simultaneously, thanks so much for pointing this out.

The typo is precisely the reason why I  wanted to make the substitution with Maple commands. The formula's okay on my piece of paper and then all wrong after I type it in. Maple's a wonderful assistant in that.

so jakubi once again I must thank you very much for your great support with this substitution. It'll allow me to run the  worksheet over and over with some confidence.

And congratulations on your 1,000th post -- a landmark! I'll have a drink to your health.

The substitution I'm after is actually a little more involved. I should have started with this from the start, I apologize for making this discussion drag on. I initially thought I would manage with a few hints, but I realize now that I'm still stuck. If your patience has not run out, here is what I'm after: The matrix introduced earlier:

M := matrix(2,2,[(q-b)*f[x,x]*eta(c)/(f(x)-c)-(q-b)*(f[x]-q)*eta(c)/(f(x)-c)^2*f[x],(q-b)*(f[x]-q)*eta[c]/(f(x)-c)+(q-b)*(f[x]-q)*eta(c)/(f(x)-c)^2,1+(f[x]-q)*eta(c)/(f(x)-c)-(q-b)*eta(c)/(f(x)-c),0]);

I have tried things along the lines of: subs(f[x]-q=lambda*(f(x)-c),eval(M)): subs((q-b)=-mu*(f(x)-c),eval(%)): subs(nu=lambda*f[x]-eta(c)*f[x,x],eval(%));

But have been unable to obtain the following (done by hand):

Matrix(2,2, [mu*(lambda*f[x]-eta*f[xx]),-mu*(f[x]-q)*eta[c]-lambda*mu,1+lambda+eta*mu,0]);

Thanks!

The substitution I'm after is actually a little more involved. I should have started with this from the start, I apologize for making this discussion drag on. I initially thought I would manage with a few hints, but I realize now that I'm still stuck. If your patience has not run out, here is what I'm after: The matrix introduced earlier:

M := matrix(2,2,[(q-b)*f[x,x]*eta(c)/(f(x)-c)-(q-b)*(f[x]-q)*eta(c)/(f(x)-c)^2*f[x],(q-b)*(f[x]-q)*eta[c]/(f(x)-c)+(q-b)*(f[x]-q)*eta(c)/(f(x)-c)^2,1+(f[x]-q)*eta(c)/(f(x)-c)-(q-b)*eta(c)/(f(x)-c),0]);

I have tried things along the lines of: subs(f[x]-q=lambda*(f(x)-c),eval(M)): subs((q-b)=-mu*(f(x)-c),eval(%)): subs(nu=lambda*f[x]-eta(c)*f[x,x],eval(%));

But have been unable to obtain the following (done by hand):

Matrix(2,2, [mu*(lambda*f[x]-eta*f[xx]),-mu*(f[x]-q)*eta[c]-lambda*mu,1+lambda+eta*mu,0]);

Thanks!

do you just save from the browser menu as a "Web Page, Complete" ?

Hey jakubi I notice your number is 999! can't wait to see it turn to 1,000, well done!

Hi jakubi, what do you mean by "locally"? do you mean on your own machine?

actually, a workaround I should have thought about (where's my brain?) is simply to use google's advanced search and to restrict the search to http://www.mapleprimes.com

mapleprimes could easily incorporate a google search box with http://www.mapleprimes.com predefined by default ... unless they want nothing to do with google of course.

I see junk too. I have had problems posting 2D math in mapleprimes -- I haven't tried for a while as a result of many past failures.