题型：名词解释 已知二次函数f（x）=ax2+bx+c（a≠0）且满足f（-1）=0对任意实数x，都有f（x）-x≥0，并且当x∈（0，2）时，有f(x)≤(x+12)2（1）求f（1）的值；（2）证明：a＞0、c＞0；（3）当x∈[-1，1]时，g（x）=f（x）-mx（m∈R）是单调的，求证：m≤0或m≥1． 查看答案
题型：名词解释 Tom was at a loss as to how a car worked, so it was ______ that he knew nothing about how to repair cars.A．apparentB．absurdC．confusedD．complicated 查看答案