题目1多选题
下列使用第二类换元法求积分无误的是( )【上册第27讲】A. <img src="https://tihai-oss-cloud.itihey.com/img/a908f4bf4baa15b16ef44716775399e7.webp"> <img src="https://tihai-oss-cloud.itihey.com/img/c1d345f1aab1f211a67e4d602502e5e8.webp"> <img src="https://tihai-oss-cloud.itihey.com/img/f9515b1ba8817c976f6516d2af0f8a7e.webp">B. <img src="https://tihai-oss-cloud.itihey.com/img/5495614ab5f402b3fb2663eb52ed777c.webp"> <img src="https://tihai-oss-cloud.itihey.com/img/28925dfc8ffe3c7839ba9b9cad80d06c.webp"> <img src="https://tihai-oss-cloud.itihey.com/img/684cf3ac46178ce9227e6ed3c7f25e0a.webp">C. <img src="https://tihai-oss-cloud.itihey.com/img/a02542f3de4265b9deea49392e2a1c6f.webp"> <img src="https://tihai-oss-cloud.itihey.com/img/7470e96de13b1268a8285e2000a69794.webp"> <img src="https://tihai-oss-cloud.itihey.com/img/7c0310cd665f9648289d11bcfa880f8a.webp">D. <img src="https://tihai-oss-cloud.itihey.com/img/126430a1f080df0e3836f2626120a6a1.webp"> <img src="https://tihai-oss-cloud.itihey.com/img/28925dfc8ffe3c7839ba9b9cad80d06c.webp"> <img src="https://tihai-oss-cloud.itihey.com/img/b45516a387ab05e6fb785eb71514a2a3.webp">