quadratics | FIRST AND SECOND DIFFERENCES
It is true that the second difference of a quadratic is always the slope of If you try non-quadratic functions, you'll see that the same relationship doesn't hold. but the derivative is actually closer linked to the first difference. The graph of a quadratic equation has the shape of a parabola. A quadratic relation has constant second differences. →the difference between consecutive first. First and second differences.
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