Originally Posted by

**Prove It** I would, considering I have no idea if this is the actual problem. As the other posters have stated, it appears that you had tried to write $\displaystyle \displaystyle \begin{align*} \frac{dy}{dx} = (y + 1)(x - 1) \end{align*}$ with a typo, thereby making an entirely different problem. The reason it looks wrong is because you would not usually write $\displaystyle \displaystyle \begin{align*} 1(x - 1) \end{align*}$.

Which is the correct problem? $\displaystyle \displaystyle \begin{align*} \frac{dy}{dx} = (y + 1)(x - 1) \end{align*}$ or $\displaystyle \displaystyle \begin{align*} \frac{dy}{dx} = y + 1(x - 1) \end{align*}$?