Groups > comp.soft-sys.math.maple > #1048

Re: Help with math formula

From	William Unruh <unruh@invalid.ca>
Newsgroups	comp.soft-sys.math.maple
Subject	Re: Help with math formula
Date	2014-12-10 16:47 +0000
Organization	A noiseless patient Spider
Message-ID	<m69tef$jop$1@dont-email.me> (permalink)
References	<752d9d65-7c59-4684-82b0-dd4b858608ff@googlegroups.com> <101220140422358419%edgar@math.ohio-state.edu.invalid>

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On 2014-12-10, G. A. Edgar <edgar@math.ohio-state.edu.invalid> wrote:
> 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
>

Except this assumes that when he says "multiple"  or "multiply" he
really means "evaluate at". Given his last sentence where he uses
"apply" this might be a reasonable, though highly unconventional,
interpretation of the word.

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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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