My Math Forum Developing equation to satisfy specific parameters (potentially partial derivatives?)

 Applied Math Applied Math Forum

 April 9th, 2017, 03:35 PM #1 Newbie   Joined: Apr 2017 From: California Posts: 1 Thanks: 0 Developing equation to satisfy specific parameters (potentially partial derivatives?) I'd like to start out by stating that I am an engineer, but would not consider myself a math expert. Which is why I am posting here; so I can pick the brains of those that eat and breathe this stuff (and are likely much smarter than me) I have a unique problem that I am trying to solve by developing an equation (or system of equations) to satisfy some specific parameters. 1. The equation will contain four variables (categories) that will need to be simultaneously solved in order to output a maximum condition based on given input. 2. Input for each category will range between 0 and 1 and will be multiplied by its corresponding variable. You could consider each categorical input as an individual and independent rating. The purpose of the equation is to take this input, combine them with factors and output a maximum combined rating. 3. The variables will have individually specified ranges (for example: 0.2 <= x1 <= 0.4; 0.2 <= x2 <= 0.4; 0.1 <= x3 <= 0.2; 0.1 <= x4 <= 0.2). The sum of all the variables must be 1. Example problem: Ratings for Test 1: Category 1 rating: C1 = 0.75 Category 2 rating: C2 = 0.90 Category 3 rating: C3 = 0.75 Category 4 rating: C4 = 1.00 Fixed variable ranges for all Tests: 0.2 <= X1 <= 0.4 0.2 <= X2 <= 0.4 0.1 <= X3 <= 0.2 0.1 <= X4 <= 0.2 (C1*X1) + (C2*X2) + (C3*X3) + (C4*X4) = MAX I look forward to everybody's input! Thanks!
 April 9th, 2017, 03:47 PM #2 Senior Member     Joined: Sep 2015 From: USA Posts: 1,763 Thanks: 905 the problem description isn't clear. are you given the $c_i$ and want to select the $x_i$ within their specified ranges such that a) $\sum x_i = 1$ b) $\sum c_i x_i = MAX$ ?

 Thread Tools Display Modes Linear Mode

 Similar Threads Thread Thread Starter Forum Replies Last Post toczek Calculus 3 May 6th, 2016 01:54 PM johngalt47 Calculus 2 November 23rd, 2013 12:44 PM SPOURSY Algebra 0 September 28th, 2013 01:56 PM Mircode Math Software 0 April 27th, 2011 11:46 PM michalpp Real Analysis 0 January 31st, 2010 07:32 AM

 Contact - Home - Forums - Cryptocurrency Forum - Top