二次函数 (12 16:44:23) 若函数Y=1/2( X2-100X+ |X2-100X-196| ),则当自变量X取1,2,3,.,100这100个自然数时,函数值的和是（  ）A.540        B.390       

二次函数 (12 16:44:23) 若函数Y=1/2( X2-100X+ |X2-100X-196| ),则当自变量X取1,2,3,.,100这100个自然数时,函数值的和是（  ）A.540        B.390       
二次函数 (12 16:44:23)
 
若函数Y=1/2( X2-100X+ |X2-100X-196| ),则当自变量X取1,2,3,.,100这100个自然数时,函数值的和是（  ）
A.540        B.390         C.194       D.94

二次函数 (12 16:44:23) 若函数Y=1/2( X2-100X+ |X2-100X-196| ),则当自变量X取1,2,3,.,100这100个自然数时,函数值的和是（  ）A.540        B.390       
X2-100X-196=(x-50)^2-2696在x的取值范围内