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Cant solve simple equation. Says it cant with the methods available to Solv

Posted 10 years ago

I'm trying to evaluate a cell that contains the following Eq.:

ClearAll[k,f,M,La,d] Solve[(4fL/d)==((1-M^2)/(kM^2))+(((k+1)/(2k))(Log[((k+1)M^2)/(2+((k-1)*M^2))])),M]/.{f->0.025,L->12.0,d->0.02,k->1.4}

Mathematica 10 returns the following error: "Solve::nsmet: This system cannot be solved with the methods available to Solve."

I checked and it's correctly written. I also tried it in Wolfram Alpha online and it interprets well and solves it, as you can see in this screenshot

enter image description here

POSTED BY: Fabio G
3 Replies

Hi Fabio,

I've run into this problem, too. It turns out that the forum software interprets anything between two asterisks as italics. In fact, anything between two sets of double asterisks is bold and anything between two sets of triple asterisks is bold italics.

Eric

POSTED BY: Eric Johnstone
Posted 10 years ago

I'm sorry, I must have made some mistake editing the post, because variables were being properly multiplied with the " * " symbol in my code.

I used the FindRoot function and it worked. thanks for taking the time to answer!

POSTED BY: Fabio G
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