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
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![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](/uploads/image/z/15029236-28-6.jpg?t=%E4%BA%8C%E6%AC%A1%E5%87%BD%E6%95%B0+%2812+16%3A44%3A23%29%26%23160%3B%E8%8B%A5%E5%87%BD%E6%95%B0Y%3D1%2F2%28+X2-100X%2B+%7CX2-100X-196%7C+%29%2C%E5%88%99%E5%BD%93%E8%87%AA%E5%8F%98%E9%87%8FX%E5%8F%961%2C2%2C3%2C.%2C100%E8%BF%99100%E4%B8%AA%E8%87%AA%E7%84%B6%E6%95%B0%E6%97%B6%2C%E5%87%BD%E6%95%B0%E5%80%BC%E7%9A%84%E5%92%8C%E6%98%AF%EF%BC%88%26%23160%3B+%EF%BC%89A.540%26%23160%3B%26%23160%3B%26%23160%3B%26%23160%3B%26%23160%3B%26%23160%3B%26%23160%3B+B.390%26%23160%3B%26%23160%3B%26%23160%3B%26%23160%3B%26%23160%3B%26%23160%3B%26%23160)
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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