题目1A. 二阶及二阶以上的导数统称为高阶导数B. 函数y=f(x)在点 <img src="https://tihai-oss-cloud.itihey.com/img/af81de9ba5db6acabbd1c430c8a13384.webp">可微,则y=f(x)在点 <img src="https://tihai-oss-cloud.itihey.com/img/b40014d53a74f80a2ccfb5fa596adbeb.webp">一定可导C. 函数y=f(x)在点 <img src="https://tihai-oss-cloud.itihey.com/img/b40014d53a74f80a2ccfb5fa596adbeb.webp">可导,则y=f(x)在点 <img src="https://tihai-oss-cloud.itihey.com/img/b40014d53a74f80a2ccfb5fa596adbeb.webp">一定可微D. 函数y=f(x)的4阶导数可以记为 <img src="https://tihai-oss-cloud.itihey.com/img/c0fa64928511de3ae86f85a4e4c8f67c.webp">