Level:
Project ID:
1003206202
Accepted:
1
Clonable:
0
Easy:
0
Given \( f(x)=-\frac12x^2+x+\frac32 \), find all input values of \( f \) such that the output values of \( f \) are positive.
\( x\in(-1,3) \)
\( x\in(-\infty,-1)\cup(3,+\infty) \)
\( x\in(-3,1) \)
\( x\in(-\infty,-3)\cup(1,+\infty) \)