APFIVE Solving a Separable Differential Equation
If $$\displaystyle\frac{dy}{dx} = 1 + y^2$$, and if $$y = 0$$ when $$x = 0$$, then $$y = $$
A
$$e^x - 1$$
B
$$\sec(x) - 1$$
C
$$\tan(x)$$
D
$$\sin(x)$$
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