[问答题](本题满分11分)已知AT为矩阵A的转置,已知,且二次型.(Ⅰ)求a;(Ⅱ)求正交变换x=Qy,将化为标准型.
[问答题](本题满分10分)设在区间[-1,1]上有三阶连续导数,证明:存在实数∈(-1,1),使得。
[问答题](本题满分l0分)已知函数满足方程及.(Ⅰ)求表达式;(Ⅱ)求曲线的拐点.
[问答题]Text ThreePhrases:A. important to support (68) _____ growthB. plant-based j
[问答题]Text ThreePhrases:A. important to support (68) _____ growthB. plant-based j
[问答题]Text ThreePhrases:A. important to support (68) _____ growthB. plant-based j
[问答题]Text ThreePhrases:A. important to support (68) _____ growthB. plant-based j
[问答题]Text ThreePhrases:A. important to support (68) _____ growthB. plant-based j