首先要知道a*a-a+1的最小值是3/4这要根据抛物线顶点坐标公式确定:设Y=aX2+bX+c顶点就是[(b/-2a),(4ac-b2)/4a]a*a-a+1〉3/4〉0,为减函数,也就是:f(3/4)〉f(a*a-a+1),又因为是偶函数f(3/4)=f(-3/4)所以:f(-3/4)〉f(...
Maths Problem,Help Me!
1个回答
相关问题
-
I have problems ____ (learn) Maths.Will you help me
-
Could you please help me (out|with) this math problem?
-
—Would you like me to help you with the maths problem?
-
Can you tell me ____ ____ ____ ____the maths problem?
-
please help me with the math
-
关于八年级英语,同义句转换!Can you help me with the math problem!(同义句转换)_
-
同义句 she often helps me with my maths she often helps me ____
-
please help me a english problem
-
—These Maths problems are too hard to ______. Can you help m
-
can you help me about math?thanks!