# Thread: Is this equation solvable for y?

1. ## Is this equation solvable for y?

Hi all,

I'm not sure if this question should go in algebra or trigonometry, but...

I want to know if this equation is solvable for y. x can be negative, but z is always positive (if that makes a difference).

x = y + e(-1.9 + 3.9×tanh(-(y - 121) ÷ 14)) × (z - 4)(1.9 + 1.4×tanh(-(y -121) ÷ 14))

I haven't done any math since high school, so please use short words!
Thank you very much for any help!

2. ## Re: Is this equation solvable for y?

Not analytically, no.

3. ## Re: Is this equation solvable for y?

, thanks anyway! Is it because of the tanh?

4. ## Re: Is this equation solvable for y?

That and that $y$ appears as an exponent as well as a base.