Science:Math Exam Resources/Courses/MATH102/December 2013/Question A 01/Statement

Let $f(x)=\sin (x)+a{x}^2$. Which of the following conditions describes all values of a for which f HAS inflection points?

(a) $|a|>\frac{1}{2}$

(b) $a>\frac{1}{2}$

(c) $a\ge \frac{1}{2}$

(d) $|a|<\frac{1}{2}$

(e) $|a|\le \frac{1}{2}$