Is there a way to obtain the order of an ODE in mathematica.

For example, if i have `y''+5y`

i want mathematica return `2`

(beacuse it's a 2nd order equation). So, is it possible what i'm asking?

Is there a way to obtain the order of an ODE in mathematica.

For example, if i have `y''+5y`

i want mathematica return `2`

(beacuse it's a 2nd order equation). So, is it possible what i'm asking?

here is a way to extract the value automatically:

```
ode = y'' + y' + y == 0 ;
Max[Cases[ ode , Derivative[n_][y] :> n , Infinity]]
```

2

note this just finds the largest derivative in the expression, it doesn't verify if the expression is actually an ode..

html,css,twitter-bootstrap-3,order,multiple-columns

Added a custom class up-xs and down-xs for the two div's and set the xs width condition using media-query. HTML <div class="row"> <div class="col-md-9 down-xs">Content</div> <aside class="col-md-3 up-xs">Some aside text</aside> </div> CSS @media ( max-width: 480px ) { .row { display: flex; flex-flow: column; } .up-xs { order: 1; }...

use gulp-sort to get the file in alphabetical sequence. The plugins do output the files in the sequence in which they receive it, hence the sequence of files is even out of their control. and its actually good that they dont sort the files, the plugin should only do what...

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algorithm,sorting,language-agnostic,order,priority

Perhaps you could use a legal-style paragraph numbering.: 1, 1.12, 1.12.1, 1.12.2, 1.12.2.5 and so on. You can always insert a new entity between existing entities by extending to a new level of '.1'. Quite how you stop users assigning absurdly high priorities to otherwise routine documents is another problem....

wolfram-mathematica,wolfram-language

Switch may be useful, for example: Switch[ # , _String , StringLength[#] , _List , Length[#] , __ , Null ] & /@ { "abc", {1, 2, 3, 4}, Pi} {3, 4, Null} ...

The thing is that .col-md-x set x columns for devices >= 940px, when the width is below that, the grill will show vertically, so the second col-md-6 (part-two) goes underneath of the first one(part-one) whit all its content, then having said that. You can use: <div class="row"> <div class="col-md-6"> <p>PARAGRAPH...

order,prestashop,prestashop-1.6

if you have the the price with tax and the price without tax you can calculate the tax amount and store the value in variable: {assign var='totalTax' value=$total_products_wt - $total_products} {displayWtPriceWithCurrency price=$totalTax currency=$currency}</span> ...

@products = Product.order("count(votes) DESC") If you have not votes column then use: @products = Product.all.sort { |a, b| b.votes.count <=> a.votes.count } ...

Since you are specifying the ordinal domain, dc.js will used that instead of calculating it using the existing values and the ordering you specify. Simply remove the domain and specify the ordering: .x(d3.scale.ordinal()) .ordering(function(kv) { return -kv.value; }) Fork of your fiddle: http://jsfiddle.net/0p78m8vr/6/...

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php,mysql,performance,order,records

You can do this with a LIMIT clause, all you have to do is make sure your WHERE clause filters out categories you don't want. Try this: SELECT * FROM myTable WHERE category NOT IN(category, list) ORDER BY popularity DESC LIMIT 3; The way you'll pass in the list is...

The output formatting needs to be mapped over the results. Export["mathematica1.dat", Transpose[{ Map[OutputForm[NumberForm[#, {3, 1}]] &, nwwa], Map[OutputForm[NumberForm[#, 6]] &, nkka]}], "Table"]; ...

One possibility would be to find the cumulative maxima of the vector, and then extract unique elements: unique(cummax(a)) # [1] 2 5 6 8 ...

The only way to do it in a "single step" is to define a method, use the BitConverter: public static int ReverseByteOrder(int value) { byte[] bytes = BitConverter.GetBytes(value); Array.Reverse(bytes); return BitConverter.ToInt32(bytes, 0); } Usage: int value = 0x1480D604; //or parse from string int decValue = ReverseByteOrder(value); //decValue = 0x04D68014 IsLittleEndian...

r,function,order,sequence,rstudio

If you want a function that takes vectors A, B, C, and D and input and outputs a sorted version of them, you can try: sortAll <- function(A, B, C, D) sort(c(A, B, C, D)) And then you can run it with something like: A <- c(1,2,2,3) B <- c(5,6,7,8)...

python,dictionary,order,nested

Putting the content of a regular unordered dict into an ordered dict will not magically restore the order of the values in the unordered dict. There are some things you could do, though: Create example1 as an OrderedDict, too, so its values are ordered; but pass the items as a...

python,django,order,django-queryset

You should use, tutteIn = MktIn.objects.all().order_by('id_squadra__nome', 'ruolo', '-ingaggio') It's your field name, not the model name....

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You have all of your details in $klantgegevens, and that that data is all shown in one row. That will cause you problems. It appears you have not normalized your data in your database. I suggest creating a table name something like customerDetails and then including rows such as id,...

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You can simply add the SUM function to the ORDER BY caluse: Select bus.trans_comp_id, SUM(bus.passengers*trips.cost) From bus inner join trips on bus.ID=trips.bus_id group by bus.trans_comp_id order by SUM(bus.passengers*trips.cost) desc ...

java,data-structures,order,comparator

The TreeSet won't reorder itself when you change the value of the elements. You have to take the elements out and re-add them if you want them to remain ordered: Node first = ts.pollFirst(); first.s--; ts.add(first); ...

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python,wolfram-mathematica,sage

According to Trac 16703, this problem should be fixed in the latest Sage. I don't personally have a copy of Mathematica to test this on.

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In magento every order has two IDs Order ID - is Magento internal order ID Order Increment ID - is the ID display on communicate (email, etc) with your customer See Confusion with order id, order increment id and I am not getting order id as 20001201 To load order...

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The thing to keep in mind is that Mathematica is formula-oriented and is programmed in terms of mathematical variables, while Matlab is numerically oriented and programmed in terms of matrices and arrays. To evaluate a function of two variables on a grid, it is necessary to first generate that grid...

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First you should create ActiveRecord class for video and likes tables to make things easier. The aim is to create the two following classes class Video extends \yii\db\ActiveRecord and class Likes extends \yii\db\ActiveRecord. To do it easily, you should look at gii utility which will do it for you (available...

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One method I use to to odd sortsis use the context to control it. In the window action for the kanban view, add a context like <field name="context">{'do_my_special_sort': True}</field> and then on the model, override the search method, check for this flag in the context and set the sort order....

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Use CASE expression in ORDER BY clause: SELECT category FROM ( SELECT DISTINCT category FROM merchant ) t ORDER BY CASE WHEN category = 'General' THEN 0 ELSE 1 END, category ASC CASE guarantees that rows with General will be sorted first. The second argument orders the rest of the...

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ruby-on-rails,ruby,tags,order,tag-cloud

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sql-server,date,casting,order,group

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sql,tsql,recursion,order,hierarchy

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