What is the interval of existence for the IVP y′=1+y2,y(0)=0y' = 1+y^2, y(0) = 0y′=1+y2,y(0)=0?
(−1,1)(-1, 1)(−1,1)
(0,π)(0, \pi)(0,π)
(−π/2,π/2)(-\pi/2, \pi/2)(−π/2,π/2)
(−∞,∞)(-\infty, \infty)(−∞,∞)