-3sqrt (2) C. -2sqrt (3) D. -1

[ sqrt (3),2] -|||-C. [ -2,-sqrt (3)] D. [ -2,-sqrt (3)] cup [ sqrt (3),2]

计算下列各题：（1）sqrt((1)/(4))×sqrt(144)；（2）3sqrt(2)×5sqrt(8)；（3）5sqrt(x)•6sqrt((x)^3)；

=2sqrt (2) D. Delta PAC 的面积为 sqrt (3)

A.sqrt(1+x) B.(sqrt(1+x))/(2) C.(sqrt(1+x))/(sqrt(x)) D.(sqrt(1+x))/(2sqrt(x)

sqrt (2)-|||-C. sqrt (34)-|||-○ D. sqrt (2)

sqrt (2) C. sqrt (3) D.2

sqrt (dfrac {3g)(l)}-|||-C. sqrt (dfrac {3g)(2)}-|||-D. sqrt (dfrac {8)(3)}

sqrt (2)pi :2 C. sqrt (2)pi :4 D. sqrt (2)pi :8

→ ((1)/(2sqrt(3))ln|(x^2+sqrt(3)x+1)/(x^2)-sqrt(3)x+1|+(1)/(2)arctanx+(1)/(6)ar

(int )_(1)^sqrt (3)dfrac (dx)({x)^2sqrt (1+{x)^2}};