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• I need objective-C syntax for calculating bmi

  - by Umaid

  Actually I am working on bmi calculator. Where I would like to calculate bmi for height in inches and weight in lbs and also in need of correct formula for height in cm and weight in kgs. I have tried but couldn't calculate actual value coming withing the range as below. It exceeds the range. BMI Categories: * Underweight = <18.5 * Normal…

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• How would someone go about implemention mathematical formulas in java?

  - by Mohit Deshpande

  What I mean is like have to user input a string with multiple variables and get the value of those variable. Like a simple quadratic formula: x^2 + 5x + 10. The user would then enter that and then the program would solve for x. I will be using the BeanShell Interpreter class to interpret the string as an equation. But how would I solve for x?

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• MIN array function non zeros only

  - by user1717622

  I have been trying to get this array function to output (non-zero) minimum values in the 'FINAL DATA' AE column. Can you see a structural error in this formula? =IF($C$4="All EMEA", MIN(IF('FINAL DATA'!$2:$AE$250000<>0, ('FINAL DATA'!$J$2:$J$250000=$C$4)*('FINAL DATA'!$E$2:$E$250000=$E$4)*( 'FINAL DATA'!$AE$2:$AE$250000))), …

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• Database system that is not relational.

  - by paan

  What are the other types of database systems out there. I've recently came across couchDB that handles data in a non relational way. It got me thinking about what other models are other people is using. So, I want to know what other types of data model is out there. (I'm not looking for any specifics, just want to look at how other people…

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• Bank angle from up vector and look at vector?

  - by 742

  Hi all. I can't figure out the formula to compute the bank (roll) angle from the up and lookat vectors, though I feel this angle must be measured in tha plan normal to the lookat vector. Any hint appreciated. FYI I use WPF.

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• I need summarise months into years, how can i do that?

  - by Tay

  Hi i working a fairly large spreadsheet which is broken down into months. I want to put the yearly subtotals at the begining of the spreadsheet. So in cell A1 i want to add AA2-AL2, B1 i want to add AM2-AX2 and so on so forth. How can i do this whithout manually going to each set of values. Is there anyway i can put a formula in A1 which…

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• computed column with aggregate function

  - by Kindson

  I have seven columns in my table: hours, weight, status, total_hours, total_weight and percentage total_weight = weight where status = 'X' total_hours = hours where status = 'X' percentage = total_hours/sum(weight) sum(weight) is an aggregate function I would like to specify formula to generate the three computed columns. What do i…

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• Android Speed based on accelerometer values

  - by fraguas

  Hi. I need to obtain the velocity of an android device, based on the accelerometer values. I made a code that allows me to get the accelerometer values, and then I calculate the velocity, using the formula: v = v0 + at. (vector calculation) My problem is that my velocity only increases and never decreases. I think the problem is that…

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• TCP Slow Start, Congestion Avoidance & Determining Bandwidth

  - by Robert S. Barnes

  Is there a formula someplace which can be used to determine the minimum number of segments / bytes which need to be transfered across a TCP connection to determine it's bandwidth and which takes into account Slow Start and Congestion Avoidance?

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• JavaScript Coding for Finding Shipping Total

  - by user2913279

  I am having a very hard time with this code. I have been working on it for days and cannot seem to figure it out. Please help!! Here are the specific I need for the code: Many companies normally charge a shipping and handling charge for purchases. Create a Web page that allows a user to enter a purchase price into a text box and…

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• Excel : sum of values depending of other values

  - by gregseth

  Hi, What would be the equivalent Excel formula of this SQL query SELECT SUM(a) FROM table WHERE b < 0; A B ---- ---- 1 0 2 -1 3 4 5 -3 >> 7

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• intersecting line and array of points?

  - by senthilmuthu

  hi, i am having a line in normal graph,i want to know intersecting some points with that line , any formula for it?any help please?

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• need .htaccess RewriteRule advise

  - by Abuda Dumiaty

  I've looked around for an answer to this, no luck. what i want to do is replace: http://localhost/mysite/admin/something with: http://localhost/mysite/admin/?p=something Here's the best formula I came up with since yesterday: RewriteEngine On RewriteBase /mysite/ RewriteRule ^(superv/)([^\?/]+)$ $1\?p=$2 [NC] Yet it's not…

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• How to match parameter names in an expression?

  - by burak ozdogan

  Hi, I have a set of expressions representing some formula with some parameters inside. Like: [parameter1] * [parameter2] * [multiplier] And many others like this. I want to use a regular expression so that I can get a list of strings (List<string>) which will have the following inside: [paramter1] [paramter2]…

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• Scaling vectors from a center point?

  - by user146780

  I'm trying to figure out if I have points that make for example a square: * * * * and let's say I know the center of this square. I want a formula that will make it for eample twice its size but from the center * * * * * * * * Therefore the new…

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• Help understanding unipolar transfer function

  - by locky28

  There is a question I am stuck on using the following formula for the unipolar transfer function: f(net)= 1 __________ -net 1 + e The example has the following: out = 1 ____________ = 0.977 -3.75 1 + e How do we arrive at 0.977? What is e?

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• Excel macro, to copy and paste a cell value based on another cell value?

  - by Keziah Dorman

  Hi I shall try to explain clearly what I need to be able to do, here goes: I have an Excel spread sheet 1 with postcodes in column a and a number in column b. I need to create a macro/formula so that it will see the number (i.e 4) and copy and paste the postcode that number of times into sheet 2 column a underneath each…

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• Greatest not null column

  - by Álvaro G. Vicario

  I need to update a row with a formula based on the largest value of two DATETIME columns. I would normally do this: GREATEST(date_one, date_two) However, both columns are allowed to be NULL. I need the greatest date even when the other is NULL (of course, I expect NULL when both are NULL) and GREATEST() returns NULL…

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• Get all Vector2 Points Within Radius

  - by CheapDevotion

  I am looking for a formula that will give me all of the Vector2 Points within a certain radius given the center. Essentially what I am trying to do is change the color of each pixel in a 256 x 256 texture that is within a certain radius from a specific pixel (Using the Unity3d Game Engine). Programming Language…

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• C# - OR and AND

  - by Alexry

  Newbie question. How to calculate the value of the formula A f B, where f - the boolean function OR or AND?

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• efficient algorithm to test whether a given number is part of the fibonnaci sequence

  - by blueberryfields

  Given the number X, is it a fibonnaci number? Any source code or mathematical formula would be ok. Yes, it looks like this is a duplicate of (this question). How does stack overflow deal with duplicates?

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• I need objective syntax for calculating bmi

  - by Umaid

  Actually I am working on bmi calculator. Where I would like to calculate bmi for height in inches and weight in lbs and also in need of correct formula for height in cm and weight in kgs. I have tried but couldn't calculate actual value coming withing the range as below. It exceeds the range. BMI Categories: *…

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• How do i render and detect a line of sight?

  - by acidzombie24

  If you look at the top right you'll see on a radar an enemy unit line of sight. I was wondering what is the most efficient or easiest way (little code, fairly accurate. doesnt need to be perfect) to detect if something is in your line of sight? I may or may not need to render it (i likely wont). I dont know the…

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• How to find an audio file's length (in seconds)

  - by mIL3S

  Hi all! (Objective C) Just using simple AudioServicesPlaySystemSoundID and its counterparts, but I can't find in the documentation if there is already a way to find the length of an audio file. I know there is AudioServicesGetPropertyInfo, but that seems to return a byte-buffer - do audio files embed their…

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• how to use ln in Java

  - by fang_dejavu

  Hi, I'm trying to use this formula in JAVA : (-ln(1-L))/L I'm not sure how to use ln in java. thanks in advance

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