Exponential linear equations
Exponential linear equations
(OP)
Can anyone point me to the proper function/procedure to solve this equation for V?
V^2 + 2^(c*V) - d = 0 (so V is added and in an exponent at the same time).
Or am I going to need to approximate it? I'm a bit rusty on the math end.
Thanks,
Z
V^2 + 2^(c*V) - d = 0 (so V is added and in an exponent at the same time).
Or am I going to need to approximate it? I'm a bit rusty on the math end.
Thanks,
Z





RE: Exponential linear equations
RE: Exponential linear equations
Z
RE: Exponential linear equations
I tried Mathcad 15, Maple, Maxima, and an online solver with no solutions to be found.
TTFN

FAQ731-376: Eng-Tips.com Forum Policies
Need help writing a question or understanding a reply? forum1529: Translation Assistance for Engineers
Of course I can. I can do anything. I can do absolutely anything. I'm an expert!
There is a homework forum hosted by engineering.com: http://www.engineering.com/AskForum/aff/32.aspx
RE: Exponential linear equations
What does it describe? A Varistor? Or what? How did you arrive at it?
Gunnar Englund
www.gke.org
--------------------------------------
Half full - Half empty? I don't mind. It's what in it that counts.
RE: Exponential linear equations
Trying again exactly as presented "... = 0", and it didn't offer up the V = solution.
Now, let me see how to post it...
RE: Exponential linear equations
The solution shown is "=" and is thus supposedly exact. Further down the page (not included here) it offered approximate numerical solutions.
Wolfram Alpha is, in general, often extremely useful.
Is this solution correct? Best to double check.
RE: Exponential linear equations
But, excuse my ignorance, what does W stand for? Is it a secret Wolfram function?
Gunnar Englund
www.gke.org
--------------------------------------
Half full - Half empty? I don't mind. It's what in it that counts.
RE: Exponential linear equations
"W(z) is the product log function"
Wiki says http://en.wikipedia.org/wiki/Lambert_W_function
Yikes!! I must have been absent that day.
RE: Exponential linear equations
And I was obviously absent the whole week!
Gunnar Englund
www.gke.org
--------------------------------------
Half full - Half empty? I don't mind. It's what in it that counts.
RE: Exponential linear equations
V is velocity for a motion profile that I'm working on.
Z
RE: Exponential linear equations
Laziness (a.k.a. instinctive efficiency) pays off again.
RE: Exponential linear equations
TTFN

FAQ731-376: Eng-Tips.com Forum Policies
Need help writing a question or understanding a reply? forum1529: Translation Assistance for Engineers
Of course I can. I can do anything. I can do absolutely anything. I'm an expert!
There is a homework forum hosted by engineering.com: http://www.engineering.com/AskForum/aff/32.aspx
RE: Exponential linear equations
Gunnar Englund
www.gke.org
--------------------------------------
Half full - Half empty? I don't mind. It's what in it that counts.
RE: Exponential linear equations
If you call that section of the report 'Simulation', then nobody will notice that you skipped the difficult math.
It's a reasonable approach because it only takes a little bit more problem complexity for the equations to become truly unsolvable. Numerical simulation provides much better coverage of the possible problem space.
Probably less susceptible to human error too.
RE: Exponential linear equations
http://allrecipes.com/recipe/old-fashioned-swedish...
RE: Exponential linear equations