## What does the red asterisk mean on some posts?...

Rich

I was looking for a feature that would allow me to mark all the forums "as read" and a way of then loggin in to see what is new since I last logged in. Is there such a feature? Then I'd not have to scan all the posts to see what might be there since I last logged in. Rich

## real roots...

I am using the solve command in a proc to solve some simple equations. Is there an easy way of determining if the solution is an imaginary number? (basically I only want real solutions... sometimes the solutions will be in the form of a=b+1, i.e. in terms of another variable, and sometimes it will just be some number... once getting the solutions using something like ans:=solve(eqn,{vars}), how can I determine what type it is? JM

## background curve...

How do i find a background curve to a graph, i have data fitted with a spline and i need to find the background curve

## Maple 10: How do I get Maple to change what it dis...

For example, I type in standard F=ma 5 kg * 1 m/ s^2 Maple 10 spits this back after the = as 5kg*m/s^2 rather than the more common 5 kg*m/s^2 with the divisor sign half way down the 5. And what I really want is to be able to ask for any compatible units, in this case, N for Newtons, and have N replace kg*m/s^2. I notice that there is a new [[]] format for units. When I use them, they appear in my document, not all what I'd expect. Thanks much, Rich

## Maple 10: How do I change number formats?...

I'd like to have the ability to change, say, 12345.678 to Engineering 12.345E+03 12.345x10^3 Scientific 1.234E+04 1.23456x10^4 General/decimal 12345.6 fraction of varying size Are these possible? I have tried with no success... Thanks, Rich

## Maple Primes File Manager...

I haven't been to mapleprimes for awhile and noticed that the "convert worksheet" option is no longer available. Are the "file manager" and "upload file" options very different from the previous worksheet converter, and are they also any more difficult ?

## Predicate Logic Expressions...

Can Maple 10 be used to determine if the universal or existential closure of predicate logic sentences that may or may not contain quantifiers is valid ? For example, does the tautology, equivalent and other functions of the Logic package only apply to propositional sentences ? dc

## How much flexibility is there in v10 to format pag...

I am new to Maple 10, but have used other products for years. I tried v10 because the Maple website indicated that there was a great deal of flexibility in formatting pages. It seems to me, after a few days experimenting, that I cannot do more than put every thing in the middle of the page. Is this true? If not, is there a demo v10 sheet w/ instructions that shows how to do this? I can attach a pdf file of what I am interested in from Mathcad. Thanks much, Rich

## Two variables look the same but produce different ...

Here is a baffling puzzle! I have two variables that look exactly the same when I print them, have the same type, but return different results when I put them into a function! Here is the unadulterated output straight from my maple window (Opps! I notice that they didn't copy into the post quite as they should... the floating 3s are actually v[1]^3 and v[8]^3 respectively. Sorry! I hope the problem is clear): > f; 3 3 c[22] v[8] + v[1] c[11] - c[22] - c[11] > g; 3 3 c[22] v[8] + v[1] c[11] - c[22] - c[11]

Hi, Please help! I'm trying to calculate the norm of a vector (3,4). Working it out in my head I get 5. Maple gives me 4. Where is my mistake? with(LinearAlgebra); A := Vector[row]([3, 4]); C := Norm(A); print(C := 4); 4 Evan

## Stackmatrix precision by columns..??...

Can I display floating point numbers with a precision for inidivualy columns in a (for example) 3-column data table? How? Reply by email if you can...