则其面积为（ ）http://image.zhihuishu.com/zhs/onlineexam/ueditor/201711/eee7575f8d5642a8a54f52f47f38f881.png
举一反三
- 已知f(t)↔F(w)，则下列说法正确的是（） A: tf(t)↔wF(w) B: F(t)↔f(w) C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/e987a05c70d3455bad2fbdef6ce1fc1d.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/92f68075a5ff43708660199e4eed9415.png" />
- 设f(x)连续函数，则=（ ）。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/d61df8d810544f27ada3ecb86c2d853a.png
- 若f(x)是[a,b]上的可导函数，且f(a)=f(b) ，则至少存在一点ξ，使.http://image.zhihuishu.com/zhs/onlineexam/ueditor/201905/5c852ad6f0884edb8dd79ae30c470f2e.png
- 若f(x)是[a,b]上的可导函数，且f(a)=f(b) ，则至少存在一点ξ，使 .http://image.zhihuishu.com/zhs/onlineexam/ueditor/201905/5c852ad6f0884edb8dd79ae30c470f2e.png
- 若f(x)是[a,b]上的可导函数，且f(a)=f(b)，则至少存在一点ξ，使.http://image.zhihuishu.com/zhs/onlineexam/ueditor/201905/5c852ad6f0884edb8dd79ae30c470f2e.png