已知函数f(x)=X3+3x2+cx+d图像过点P(0.2)且在点M(-1.f(-1))处切线方程为6x-y+7=0修改3X2 改为bx2 求Y=F(x)的解析式 求Y=F(x)的单调性 朋友在考试 给我发的题~
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