Math Is Fun Forum

coolwind

Member

Registered: 2005-10-30

Posts: 30

How to solve this eqation?

70=T+c
110=T+ce^(K/2)
145=T+ce^K

solve T = ?

numen

Member

Registered: 2006-05-03

Posts: 115

Re: How to solve this eqation?

1) First, solve for K using your second equation:

2) Now, note that T=70-c and our K above, use your third equation:

Move over 70, and use that (110-T)/c = (c+40)/c (which you can get from 110=T+c+40 in equation 2)

But e^ln(a)=a, so

Which gives c=-320.

3) So T=70-c=70+320=390.

Last edited by numen (2006-07-26 07:59:42)

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fusilli_jerry89

Member

Registered: 2006-06-23

Posts: 86

Re: How to solve this eqation?

where does the 'e' dissapear off to?

Zhylliolom

Real Member

Registered: 2005-09-05

Posts: 412

Re: How to solve this eqation?

Last edited by Zhylliolom (2006-08-12 09:39:53)