Implement equation and solve variable

2014 2 28
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更新时间：2014 2 28
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Dear Community,
I need to implement the next equation in Matlab:
ENOB = log2 (((2^B)*((2^L+1)^(1/2))*R^(L+0.5))/pi^L)
And from the input variables B, ENOB and R, extract the Output L. Any idea about how to make it?
Thanks in advance,

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Anuj
Anuj 2014-2-28

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syms L
ENOB=input('ENOB ');
R=input('R ');
B=input('B ');
solve(ENOB - (log2 (((2^B)*((2^L+1)^(1/2))*R^(L+0.5))/pi^L)))

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Manuel
Manuel 2014-2-28
It works perfectly, but I need to have the output L as a normal varible to be use after the calculations, and with the simbolic variable it Looks empty..
Anuj
Anuj 2014-2-28
编辑：Anuj 2014-2-28
You can do this-
L=solve(ENOB - (log2 (((2^B)*((2^L+1)^(1/2))*R^(L+0.5))/pi^L)))
this will assign the value to variable L, it won't be empty anymore.
Manuel
Manuel 2014-2-28
Thank you very much, It works :)

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