Which of the following series represents f(x)=∫0xsin(t)tdtf(x) = \int_0^x \frac{\sin(t)}{t} dtf(x)=∫0xtsin(t)dt?
∑n=0∞(−1)nx2n+1(2n+1)(2n+1)!\sum_{n=0}^{\infty} \frac{(-1)^n x^{2n+1}}{(2n+1)(2n+1)!}∑n=0∞(2n+1)(2n+1)!(−1)nx2n+1
∑n=0∞(−1)nx2n(2n)(2n+1)!\sum_{n=0}^{\infty} \frac{(-1)^n x^{2n}}{(2n)(2n+1)!}∑n=0∞(2n)(2n+1)!(−1)nx2n
∑n=0∞(−1)nx2n+1(2n+1)!\sum_{n=0}^{\infty} \frac{(-1)^n x^{2n+1}}{(2n+1)!}∑n=0∞(2n+1)!(−1)nx2n+1
∑n=0∞(−1)nx2n+2(2n+2)!\sum_{n=0}^{\infty} \frac{(-1)^n x^{2n+2}}{(2n+2)!}∑n=0∞(2n+2)!(−1)nx2n+2