Re: Algebra / Symbolic Question
- To: mathgroup at smc.vnet.net
- Subject: [mg123883] Re: Algebra / Symbolic Question
- From: Bill Rowe <readnews at sbcglobal.net>
- Date: Mon, 26 Dec 2011 17:31:49 -0500 (EST)
- Delivered-to: l-mathgroup@mail-archive0.wolfram.com
On 12/26/11 at 6:54 AM, lrebanks at gmail.com (Lea Rebanks) wrote: >Given the linear function :- >f(t):- 1/(2.75 + v1) * (t) + 1 I think you mean f[t_]:=1/(2.75 + v1)*t + 1 for the above. Or said differently, this is how I would translate what you posted into Mathematica syntax. >of the form Y = M * X + B >If v1 above equals = 0.25 >And the time is 12*t :- >So that gives => 1/(2.75 + 0.25) * (12 * t ) + 1 >That gives Y = 5 Only if t = 1. That is: In[4]:= f[t_] := 1/(2.75 + v1)*t + 1 In[5]:= (f[12*t] /. v1 -> 0.25) == (1/(2.75 + 0.25))*(12*t) + 1 Out[5]= True but In[6]:= (1/(2.75 + 0.25))*(12*t) + 1 Out[6]= 4. t+1 >QUESTION:- Is it possible, (and I don't think it is), to re-write >the above function f(t) >so that the =91B=92 above is symbolically replaced with only M and >X? I could not decipher this last to determine what you are looking for as a result.