Groups > comp.soft-sys.math.maple > #1047

Re: Help with math formula

From	"G. A. Edgar" <edgar@math.ohio-state.edu.invalid>
Newsgroups	comp.soft-sys.math.maple
Subject	Re: Help with math formula
Date	2014-12-10 04:22 -0700
Organization	Ohio State Univ
Message-ID	<101220140422358419%edgar@math.ohio-state.edu.invalid> (permalink)
References	<752d9d65-7c59-4684-82b0-dd4b858608ff@googlegroups.com>

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In article <752d9d65-7c59-4684-82b0-dd4b858608ff@googlegroups.com>,
<sebastian.segura@prax.com.co> wrote:

> Hi,
> 
> Can anyone help me to solve the next math problem?
> 
> I need to find a math formula that, when I multiple 18 give me the value of
> 42, and also that same formula when I multiply 78 give me the value of 185.
> What we are trying to do is that, when the formula be apply to numbers
> between 18 and 78, the result be between 42 and 185.
> 
> Thank you for all the help you can provide to me.

Linear interpolation yields:

(143*x-54)/60 = y

so:

(143*18-54)/60 = 42

and

(143*78-54)/60 = 185

-- 
G. A. Edgar                              http://www.math.ohio-state.edu/~edgar/

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Help with math formula sebastian.segura@prax.com.co - 2014-12-09 12:05 -0800
  Re: Help with math formula rouben@shady.(none) (Rouben Rostamian) - 2014-12-10 04:02 +0000
  Re: Help with math formula "G. A. Edgar" <edgar@math.ohio-state.edu.invalid> - 2014-12-10 04:22 -0700
    Re: Help with math formula William Unruh <unruh@invalid.ca> - 2014-12-10 16:47 +0000

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