东莞长安樱花沐足技师穿得保守吗？是不是长安最正规的/?

Question

如题所述

Answer 1

一进门，一旁五彩缤纷的菊花绚烂的盛放

Answer 2

设t=x+2，

原式=∫(t-2)dt/(t3-t)

=∫dt/(t2-1)-2∫dt/(t3-t)

=(1/2)ln[(t-1)/(t+1)]-∫dt2/[t2(t2-1)]

=(1/2)ln[(x+1)/(x+3)]-∫d(t2-1/2)/[(t2-1/2+1/2)(t2-1/2-1/2)]

=(1/2)ln[(x+1)/(x+3)]-ln[(t2-1/2-1/2)/(t2-1/2+1/2)]+C

=[ln(x+1)]/2-[ln(x+3)]/2-ln(x2+4x+3)+2ln(x+2)+C

Answer 3

Then Lieutenant Blandford’s heart leaped.

Answer 4

他们哪里可以说是长安最正规的了！去过几次！不错！