# Thread: arctan(y) = x^2 + C, y = ?

1. ## arctan(y) = x^2 + C, y = ?

Just say you have an equation:

arctan(y) = x^2 + C

where C is some constant

solving for y, is it....

y= tan(x^2 + C)
or

y=tan(x^2)+C

??

which way do we put this??

2. No, if you want to separate x^2 and C, you have to use the identity:

$\tan (A+B) = \dfrac{\tan A + \tan B}{1 - \tan A\tan B}$

3. Your first answer is correct: $y = \tan(x^2+C)$

If you want to separate x and C use an identity

,

### arctan(y/x)=c

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