- #1
toddlinsley79
- 6
- 0
Homework Statement
Let f(x)=a0+a1x+a2x2+a3x3+a4x4. Show that if a0a4<0, then f(x)=0 have at least 2 real solutions.
Homework Equations
The Attempt at a Solution
Any hints? I can't tell how to begin an attempt for a solution.