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单选题 下列函数中,是偶函数的为( )
学科：高等数学（一）
时间：2026-03-20 03:32:40
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题目1单选题
<img src="https://tihai-oss-cloud.itihey.com/img/5a421e1eecb9c614f6d80858c650a5d8.png">A. <img src="https://tihai-oss-cloud.itihey.com/img/2dca43084a35093bef443727226600c5.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/009b11fbc33162c4028e8068ac18f750.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/6b1672206e1b531f654a3f6d9c541d55.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/99a5569af36b52c010d4410cda971f99.png">
题目2单选题
<img src="https://tihai-oss-cloud.itihey.com/img/02a5e0826a02b44bf6dd25b76bd8d507.png">A. 1B. <img src="https://tihai-oss-cloud.itihey.com/img/c91e6138c43f9bf8fa1fec60c4895e97.png">C. 2D. <img src="https://tihai-oss-cloud.itihey.com/img/0821b16c14989848d659ce1707b72261.png">
题目3单选题
<img src="https://tihai-oss-cloud.itihey.com/img/e433133697645aca09e22bec28ed4f8e.png">A. <img src="https://tihai-oss-cloud.itihey.com/img/436d8f9b8f6d021100fbf51c77ae248c.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/f018bea15ba25403e7ea91e6c2c2d3d9.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/c1158ab0c1e6ffc9383c1e312d275802.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/c2610a71d60092f8c4fcad0cd3574cc7.png">
题目4单选题
<img src="https://tihai-oss-cloud.itihey.com/img/7874dab5367741f1b336a5988268c3f1.png">A. <img src="https://tihai-oss-cloud.itihey.com/img/cd0755db759a02cd7cf2c975fa250005.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/316d470b0a4249d34eb28e71f591fa62.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/0be0629e6d01b1f18701968d2d9072cf.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/70c00f56c7faf24e8ba9f9c0272672cd.png">
题目5单选题
<img src="https://tihai-oss-cloud.itihey.com/img/6f31142c73a5cebc79cabad4b8b3c62f.png">A. <img src="https://tihai-oss-cloud.itihey.com/img/4cd40ed8632d167ca4fe808764c8615e.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/78fc4fcae6a96546c00d40ec9157336b.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/312c3eb941b4ea2bde08b67c1e73c20a.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/c754b61aba25d32b4ee6f5f1c1397a3a.png">
题目6单选题
计算曲线y=lnx从<img src="https://tihai-oss-cloud.itihey.com/img/88579329484c8cc98621ad468e033ada.webp">到<img src="https://tihai-oss-cloud.itihey.com/img/5ee5e289f35e72f93993893e1f2b7d4f.webp">一段的弧长( )A. <img src="https://tihai-oss-cloud.itihey.com/img/a635075f689ab717ac850f9b38d0972f.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/bad5641d18536956bf392f1307b82dfd.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/9ebf1d13b82da861c770bf440a8086c6.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/4ed8e95548bb58b06afd65bc7ffe3a03.webp">
题目7单选题
下列函数中,是偶函数的为( )A. y=sinxB. y=cosxC. y=xD. y=tanx
题目8单选题
极限lim(x→∞) [ 4 - 3/x ] 的值等于A. -∞B. 0C. 4D. 3
题目9单选题
当x→0时,下列与x是等价无穷小的是()A. sin²xB. tan²xC. cosx-1D. eˣ-1
题目10单选题
一元函数在某点极限存在是连续的()A. 充分条件B. 必要条件C. 充要条件D. 无关条件
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