数学求救 真心不懂做啊，那位朋友帮忙解答下 谢谢！！
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8. C
9. B
10.√3
11. =lim(1+5/(x²-3))^(((x²-3)/5)*2.5+4)
=(lim(1+5/(x²-3))^((x²-3)/5))^2.5*(lim(1+5/(x²-3))^4)
=e^2.5
12. =lim(1+(-2)/(3x+1))^((3x+1)/(-2)*(-4/3)-(2/3))
=(lim(1+(-2)/(3x+1))^((3x+1)/(-2))^(-4/3)*(lim(1+(-2)/(3x+1))^(-2/3))
=e^(-4/3)
9. B
10.√3
11. =lim(1+5/(x²-3))^(((x²-3)/5)*2.5+4)
=(lim(1+5/(x²-3))^((x²-3)/5))^2.5*(lim(1+5/(x²-3))^4)
=e^2.5
12. =lim(1+(-2)/(3x+1))^((3x+1)/(-2)*(-4/3)-(2/3))
=(lim(1+(-2)/(3x+1))^((3x+1)/(-2))^(-4/3)*(lim(1+(-2)/(3x+1))^(-2/3))
=e^(-4/3)
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