Contact us
Choose a category below so we can get back to you as quickly as possible.
令f(x)=x3-x+1把x=-2,0,1,2,代入驗證由零點存在定理知,若f(a)•f(b)<0,則零點在(a,b)內計算知f(-2)<0,f(-1)>0所以零點在(-2,-1)內,∴a=-2,b=-1則a+b=-3故答案為-3.
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.