## 25 Reputation

9 years, 311 days

## ScatterPlot with Regression Line...

Maple 16

I imported data into maple from excel.  I was able to make a scatterplot with my data and a regression line, but I have been unsuccessful in trying to combine them both onto the same plot.  I tried multiple different ways but still could not get it to work.

I think it has to do something with the brackets around each element inside my imported array, but I am not sure.  Any ideas would be nice.

My objective is to put the regression line and scatterplot on same graph.project1.mwproject1.mw

Thanks much.

Matt

## Prime Number Example/Euclid...

Maple

I am trying to take a list of prime numbers that I already generated with the following:

L4:=NULL:

for i from 2 to 50 do

if nops(ifactor(i))=1 then L4:=L4,i end if:

end do;

[L4]

This gives me the primes bewteen 2-50, [2,3,5,7,11,13,17,23,29,31,37,43,47].  I want to write something that takes the products of my list like this

2*3=6

2*3*5=30

2*3*5*7=210

and so on through the whole list.  Any ideas?  I figured out how to take the product of 2*3, 2*5, 2*7 and so on, but I cant figure how to make it do 2*3, 2*3*7 and so on.

I am doing a presentation on Euclids infinite prime proof and thought it would be cool to write a maple program that will show his proof for a certain amount of prime numbers.

Thanks,  Matt

## Newton Method Program...

Maple 17

Hi all I am truing to write a maple program for Newton's Method for finding a zero of a function.  I got pretty far but I am trying to get it to list all the values not just one.  Any help would be great:

Here is  what I got:

0.2000000000

0.2016393443

0.2016396757

What I want is if I type in 2 (like the last line I showed) I want the output to show for n=0, n=1, =2.  Instead it is only showing the output just for 2.  Any help would be great thanks, Matt.

## infolevel[dsolve]...

Maple 17

Hi everybody,

I am using maple to solve differential equations.  I have been using maple for some time and came across the infolevel[dsolve] command or option.  I tried finding the answer to my question online but cant seem to come across a straight answer.

My question is what does the integer do that you have to equal the infolevel[dsolve] command?

For example I am using a book that states

"An even more important diagnostic tool is the infolevel[dsolve] command, which will give information on what methods are used in attempting to solve the ODE when dsolve is applied, even if unsuccessful.  An integer between 1 and 5 must be specified, with generally more detailed information being provided as the number is increased. On applying the dsolve command to ode2, the method of attack is summarized in the following output and, in this case, the general solution y(x) given with two arbitrary coefficients C1 and C2.

What does the integer between 1 and 5 mean or do? In the example above the book uses 5, why 5?.

Thanks,

Matt

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