A polynomial is called unimodal if the sequence of its coefficients is unimodal.
If 
 is log-convex and 
 is unimodal, then 
 is unimodal.
 
	    
	
    
A polynomial is called unimodal if the sequence of its coefficients is unimodal.
If 
 is log-convex and 
 is unimodal, then 
 is unimodal.
Weisstein, Eric W. "Unimodal Polynomial." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/UnimodalPolynomial.html