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Black Book Advanced Problems in MathematicsMathematicsFunctions

If high voltage current is applied on the field given by the graph y + |y| - x - |x| = 0 . On which of the following curve a person can move so that he remains safe ?

Options

  1. Ay = x^2
  2. By = sgn (-e^x)
  3. Cy = _ 1/3 x
  4. Dy = m + |x|; m > 3

Correct answer

D. y = m + |x|; m > 3

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