What is the Maclaurin series for f(x)=sin2(x)+cos2(x)f(x) = \sin^2(x) + \cos^2(x)f(x)=sin2(x)+cos2(x)?
1+0x+0x2+…1 + 0x + 0x^2 + \dots1+0x+0x2+…
x+x2+…x + x^2 + \dotsx+x2+…
∑n=0∞xn\sum_{n=0}^{\infty} x^n∑n=0∞xn
None of the above