发布网友 发布时间:2023-10-24 10:01
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热心网友 时间:2024-12-14 10:03
办教师资格证需要什么证件
∫√[(x 1)/(x-1)]√[(x-1)/(x 1)]dx
解∫√[(x 1)/(x-1)]√[(x-1)/(x 1)]dx=∫√[(x 1)/(x-1)]dx∫√[(x-1)/(x 1)]dx
令(x 1)/(x-1)=u2;x=(u2 1)/(u2-1);dx=-[4u/(u2-1)2];
故∫√[(x 1)/(x-1)]dx=∫[-4u2/(u2-1)2]=-∫[1/(u-1)1/(u 1)]2
=-∫[1/(u-1)2 1/(u 1)2 2/(u-1)(u 1)]
=-∫[1/(u-1)2 1/(u 1)2 1/(u-1)-1/(u 1)]
=-∫d(u-1)/(u-1)2-∫d(u 1)/(u 1)2-∫d(u-1)/(u-1)∫d(u 1)/(u 1)
=1/(u-1)1/(u 1)-ln(u-1)ln(u 1)c
=2u/(u2-1)ln[(u 1)/(u-1)]c
=(x-1)√[(x 1)/(x-1)]ln√[(x 1)/(x-1)]1/√[(x 1)/(x-1)]-1 c
=√(x2-1)ln[√(x 1)√(x-1)]/[√(x 1)-√(x-1)]c
=√(x2-1)ln[x√(x2-1)]c
热心网友 时间:2024-12-14 10:03
您好,巨智教育为您解答。热心网友 时间:2024-12-14 10:04
您好,天星培训百度知道团为您服务:热心网友 时间:2024-12-14 10:04
到你所在城市的语委办(普通话测试站)报名参加测试就行。谢谢采纳。热心网友 时间:2024-12-14 10:05
入行教师要准备些什么?教师资格证必需吗