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  • 11-03-2024
  • Mathematics
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Consider the function f:R->R defined by f(x)=4x²-3x+8. For x>=1 , by the triangle inequality, we observe that |f(x)|=|4x²-3x+8| <=4x²+3x+8 <=4x²+3x²+8x²=15x²

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