(1) f(x)=x^3+mX^2+2X+p f(x)是奇函数
f(-X)=(-X)^3+m(-X)^2-2X+p
=-X^3+mX^2-2X+p
=-f(x)=-X^3-mX^2-2X-p
mX^2=-mX^2 p=-p 得m=p=0
g(x)=x^2+2X
=(x+1)^2-1
当X=-1 g(x)取最小值 g(X)min=-1
值域[-1 正无穷〕
(1) f(x)=x^3+mX^2+2X+p f(x)是奇函数
f(-X)=(-X)^3+m(-X)^2-2X+p
=-X^3+mX^2-2X+p
=-f(x)=-X^3-mX^2-2X-p
mX^2=-mX^2 p=-p 得m=p=0
g(x)=x^2+2X
=(x+1)^2-1
当X=-1 g(x)取最小值 g(X)min=-1
值域[-1 正无穷〕