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Let f:R→R be defined by f(x)=3x2+mx+nx2+1. If the range of f is [−4,3), then the value of m2+n2 is

Answer» Let f:RR be defined by f(x)=3x2+mx+nx2+1. If the range of f is [4,3), then the value of m2+n2 is


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