Mathematics
Mathematics
Problem
Let be the function defined by for all . Which of the following statements is true?Intuitive explanation
The key is recognizing that the absolute value creates a piecewise function with different behavior on either side of . Since equals when and when , the square root function will have a sharp corner (cusp) at rather than a smooth curve. Understanding this shape—and whether is continuous, differentiable, or has other properties—will help you evaluate which statement holds.
Intuitive explanation
The key is recognizing that the absolute value creates a piecewise function with different behavior on either side of . Since equals when and when , the square root function will have a sharp corner (cusp) at rather than a smooth curve. Understanding this shape—and whether is continuous, differentiable, or has other properties—will help you evaluate which statement holds.