题目
当 x > (pi)/(2) 时，int_((pi)/(2))^x ((sin t)/(t))' , dt = ( )A. (sin x)/(x)B. (sin x)/(x) + cC. (sin x)/(x) - (2)/(pi)D. (sin x)/(x) - (2)/(pi) + c
当 $x > \frac{\pi}{2}$ 时，$\int_{\frac{\pi}{2}}^{x} (\frac{\sin t}{t})' \, dt = (\quad)$
A. $\frac{\sin x}{x}$
B. $\frac{\sin x}{x} + c$
C. $\frac{\sin x}{x} - \frac{2}{\pi}$
D. $\frac{\sin x}{x} - \frac{2}{\pi} + c$
题目解答
答案
C. $\frac{\sin x}{x} - \frac{2}{\pi}$