a2x2+b2y2 |
b2x2+a2y2 |
A.t有最大值也有最小值 |
B.t有最大值无最小值 |
C.t有最小值无最大值 |
D.t既无最大值也无最小值 |
a2x2+b2y2 |
b2x2+a2y2 |
2(a2x2+b2y2+b2x2+a2y2) |
2(a2+b2) |
2(a2+b2) |
m |
n |
a2x2+b2y2 |
b2x2+a2y2 |
|m| |
|n| |
m |
n |
(ax+bx)2+(by+ay)2 |
1 |
m |
1 |
n |
A.5 | B.2 | C.7 | D.4 |
1 |
2 |
1 |
m |
2 |
1-2m |
A.2 | B.4 | C.6 | D.8 |
1 |
x |
1 |
y |
2ab |
a+b |
ab |
1 |
x-a |
© 2017-2019 超级试练试题库,All Rights Reserved.