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lgbasallote
Group Title
how to solve for \(T_m\) using a calculator?
\[\huge \frac{\ln (\frac{40  T_m}{70T_m})}{5} = \frac{\ln (\frac{0.5}{70T_m})}{35}\]
 2 years ago
 2 years ago
lgbasallote Group Title
how to solve for \(T_m\) using a calculator? \[\huge \frac{\ln (\frac{40  T_m}{70T_m})}{5} = \frac{\ln (\frac{0.5}{70T_m})}{35}\]
 2 years ago
 2 years ago

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baddinlol Group TitleBest ResponseYou've already chosen the best response.0
Is it a simple scientific calculator?
 2 years ago

mukushla Group TitleBest ResponseYou've already chosen the best response.0
isolate Tm (on the right hand side equation)
 2 years ago

mukushla Group TitleBest ResponseYou've already chosen the best response.0
u will have a equation like: Tm=f(Tm) enter an initial guess to save it in the Ans then enter f(Tm) in ur calculator with Ans instead of Tm then push the Ans Button repeatedly to converge
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.0
wahhh i dont get you...go slow please :(
 2 years ago

phi Group TitleBest ResponseYou've already chosen the best response.1
you could use newton's method \[ y_{n+1}= y_n  \frac{f(y_n)}{f'(y_n)} \]
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.0
wahh? o.O
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.0
lol i only need to know how to input this in calculator :C
 2 years ago

phi Group TitleBest ResponseYou've already chosen the best response.1
I believe you can only find a solution using a numerical technique, an iterative search that converges on an answer. A bit painful using a calculator. If you just want the solution, use wolfram.
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.0
but i need to learn howto use my calculator...hmm will you just tell me how to isolate tm then?
 2 years ago

phi Group TitleBest ResponseYou've already chosen the best response.1
you can get to a form like \[ 2(40T_m)^7=(7T_m)^6 \] but you can not isolate Tm...
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.0
hmm...where did 2 come from again?
 2 years ago

phi Group TitleBest ResponseYou've already chosen the best response.1
*70 the 2 from 0.5
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.0
oh og course
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.0
of course*
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.0
@phi are you familiar with the shift + solve in scientific calculators?
 2 years ago

phi Group TitleBest ResponseYou've already chosen the best response.1
No, but I assume it can solve equations numerically?
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.0
i think so..if i can figure it out...
 2 years ago

phi Group TitleBest ResponseYou've already chosen the best response.1
maybe this will help for convenience, let y= 40x, so the problem can be written as \[2y^7= (y+30)^6 \] \[ 2^{(1/6)}y^{(7/6)}y30 = 0 \] now you find the roots of this expression, and then find x= 40y
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.0
hmm i did not get that lol sorry...i'll try doing trial and error on my calculator now
 2 years ago

phi Group TitleBest ResponseYou've already chosen the best response.1
what calculator are you using? so I can look at its user manual
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.0
canon f788dx
 2 years ago
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