神马作文网SAT2数学题一道,请求详解
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SAT2数学题一道,请求详解
Which of the following describes the right and left behavior of the graph of f(x)= -3x^7 +2x^5 -3x +6?
A Rises right and left
B Falls right and left
C Falls left,rise right
D Rises left,falls right
E Cannot be determined
Which of the following describes the right and left behavior of the graph of f(x)= -3x^7 +2x^5 -3x +6?
A Rises right and left
B Falls right and left
C Falls left,rise right
D Rises left,falls right
E Cannot be determined
f(x)-6是一个奇函数,加个常数不影响增减性.我猜应该是选D.参照三次函数的图形.
对left和right的理解没把握.答案仅供参考.
对left和right的理解没把握.答案仅供参考.