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## Can old Maple library be converted for modern Mapl...

Hallo. There is a package "Standard Form" (for Maple 3 & 4): http://www.cecm.sfu.ca/~wittkopf/

I am interesting if it can be converted for modern Maple 18?

## Can't solve system of equation with 4 unknowns. ...

Hello friends;

I uploaded the file. Firstly i solved the 4. order ode. I converted it to trigonometric functions from exponantial.

I have 4 equation and 4 unkowns. I thought , it is sufficient to solve this. As you see , i can not solve the system .

May you help me please where i am doing wrong.

Thanks.

odev4.mw

## Integral of natural logarithm finction...

Hello everyone,

I'm using Maple18, I tried to integrate the function including natural logarithm:

Is there any simple way to directly convert the answer to the kind of form we want? I cannot not finish the conversion:

So the toolbox "IntegrationTools" was used, but finally, we couldn't compute the integral:

However, we can get the correct answer by manually inputting the formula.

Using IntegrationTools is pretty nasty and not very convenient, such as the problem I mentioned.

Does anyone have another solution?

## how to convert document in document mode to worksh...

sometimes when I download something from Maple apps centers, such as this package, http://www.maplesoft.com/applications/view.aspx?SID=33406  I find the example documents there are written in .mw and when I open them, there are in document mode style, the fancy word like style which I can't stand looking at.  It has all the math input in italic and maple commands look different from classic Maple text. It very confusing, since I see something as   (0<x<1) which is valid in this document mode, but in classical maple, this is not valid code.

It seems Maple has 2 different syntax. One that works in document mode and one that is classical text maple.

I like to use only input as Maple notation which these documents do not do.

Is there a way to convert such .mw file to become standard classic worksheet mode? I know I will lose the chapter/section heading and all that.  I also tried selecting all in the document, then did Tools->options->Display->Input display->Maple notation, but nothing happend to the open document. It remained document mode with 2D math input.

When I save it as .mws, and open it again, it remains on document mode.

How to convert such documents to classical Maple syntax?

## How to change the slew rate unit to V/us...

I have been having trouble converting the default slew rate unit from Unit('m'^2*'kg'/('s'^4*'A'))

to V/us (Volts per microsecond)

I trying to get to a point where I can define the slew rate and the result will be in terms of V/us.

Similarly, how can I change the output result from 1/s to Hz?

## Why create rtable, apply algorithm, then convert t...

I noticed this in Student:-NumericalAnalysis:-Romberg, here are the lines of interest:

The question  is: Why create rtable, apply algorithm, then convert to Matrix at end? Why not replace line 4 below with Matrix command from start? Could not the same thing be done using Matrix from the start?

-----------------------------------------
proc(expr, var, a, b, n)
local f, R, j, k, i, oldDigits;
4   R := rtable(1 .. n,1 .. n,('storage') = ('triangular')['lower']);  #Why not create Matrix here?
6   R[1,1] := evalf(1/2*(b-a)*(f(a)+f(b)));
7   for k from 2 to n do
8     R[k,1] := 1/2*evalf(R[k-1,1]+(b-a)/(2^(k-2))*add(f(a+(2*i-1)*(b-a)/(2^(k-1))),i = 1 .. 2^(k-2)))
end do;
10   for j from 2 to n do
11     for k from j to n do
12       R[k,j] := evalf(4^(j-1)*R[k,j-1]-R[k-1,j-1])/(4^(j-1)-1)
end do
end do;
13   R := evalf[oldDigits](R);
14   return convert(R,Matrix,('shape') = ('triangular')['lower']) #Why not use Matrix from the start?
end proc
------------------------------------------

Maple 18.02

## Inverse of convert/base...

Dear friends:

If

n:=197

then

d:=convert(n,base,10) --> returns [7,9,1]

Is there a simple way for getting back n from d, i.e., 197 from [7,9,1] , not using a for loop?

Thanks and best regards

## convert convolution integral to series...

hi everyone , i need your point of view in my question,any help would be appreciated in advance .

we have a discrete function named g(t) and a continous function f(t) in in convolution integral just like this :
int(f(t-x)*g(x),x=0..t) ;
we have just g(x) in some special points int the interval (0..t) , thus i need to convert this integral to a series.
how should i do this ? can anyone help or any idea ? i need at first a mathematical solution or idea about how to do this and then, how to do this in a software ?
tnx again.

## convert second order ode to first order ode.......

Hi every body:

i have a second order ode and will convert to two ode of first order with maple,how do this work???

eq := diff(y(x), x, x)+2*y(x)+y(x)^2 = 0

## Matlab to maple...

Hi! I have a matlab worksheet that i need to convert it to Maplesoft. Is it possible?

Regards

Hikmat

## how to convert word relation into graph...

for example, how to convert below word relation into graph

a^2 = 1

a*b = b*a

## how to convert SOP to POS...

input : a*b+a*c

output: (a+b)*(a+c)

convert sum of product to product of sum

## x-axis time -> cycle...

Hi I have one question.

I want to draw y=sin(t). x-axis is time and y-axis from 0 to 1.

I want to convert x-axis into cycle number. For example, in case of y= sin(t), one cycle is 2phi.

--------------------------------------------------------x-aixs                ->  -----------------------------------------------------x-aixs

1                    2phi                       4phi               (time)                                         1                         2           (cycle number)

It is simple function, so if I put t/2Phi instead of t, I can get a graph with cycle number. But Do you know other ways to convert that?

## why not have parametric equations for this equatio...

in maple 12

solve(a*b+a*c, [a(t), b(t), c(t)])

it return []

how to convert to a parametric form

and then integrate them,

and then convert parametric form back to f(a,b,c) ?