问题
单项选择题
设函数y=y(x)由方程sin(x2+y2)+ex-xy2=0所确定。则
的值为()。
A.A
B.B
C.C
D.D
答案
参考答案：B
解析：
视y为x的函数，在原方程两端同时对x求导，再解出y′
搜题请搜索小程序“爱下问搜题”
设函数y=y(x)由方程sin(x2+y2)+ex-xy2=0所确定。则的值为()。
A.A
B.B
C.C
D.D
参考答案：B
解析：
视y为x的函数，在原方程两端同时对x求导，再解出y′
用方框中所给单词填空(3%)
小题1:_________ play computer games. 小题2: _________ at the clock, please. What time is it? 小题3:Dave has a bat. He plays ________ every day. 小题4:Mr Wang has a new TV. He ________ TV every night. 小题5: She has a tennis racket and a tennis _________. 小题6:I can play _________. It’s very interesting. |