Solving complicated single variable eqaution

[EBotes]

I used the fsolve function in CAS for the following:

2200=18log((12(67.43y/2y+67.43))/0.1)*sqrt((67.43y/2y+67.43)(0.002))*(67.43y)

it says error the whole time any suggestions?

[Jan_D]

18log(...) and 12(....) and (....)(0.002) are not allowed.

12*(....) and (....)*(0.002) are.

What do you mean with 18log(...)?

When you mean 18*log(...) it is interpreted as 18*LN(...) and when you mean a log with base 18 you have to write LOG(...,18).

Pay attention to the uppercase in this last case, lowercase gives nonsense!

When I store your equation in variable g, and solve for variable y, I get:

[Maké]

Hi!, @EBotes:

You can use directly ... App Solve.

See, the images ... 

In comparison, with Wolfram Alpha ... http://www.wolframalpha.com/input/?i=2200%3D18log((12(67.43y%2F2y%2B67.43))%2F0.1)*sqrt((67.43y%2F2y...)

Note: Assume as ...

1) log(x), is the natural logarithm (LN).

2) y= Variable.