作业帮f(x)=x²(sinx+4)+2x+4/x²+1在[-a,a](a>0)上,最大值为M,最小值为m,求M+m
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f(x)=x²(sinx+4)+2x+4/x²+1在[-a,a](a>0)上,最大值为M,最小值为m,求M+m
f(x)=x²(sinx+4)+2x+4/x²+1在[-a,a](a>0)上,最大值为M,最小值为m,求M+m
f(x)=x²(sinx+4)+2x+4/x²+1在[-a,a](a>0)上,最大值为M,最小值为m,求M+m
y=x^2*sin(x) +2x +4x^2 +4/x^2 +1
y1=x^2sin(x) +2x
y2=4x^2+ 4/x^2
讨论a的取值.
M=y1最大 +y2最大
m=y1最小 + y2最小