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MHT CET20226 Aug 2022Morning ShiftMathematicsDifferentiationActual

If y- y- y- = x+ x+ x+ then d y d x =

Options

  1. Ay-x-1 y-x+1
  2. By+x+1 y+x+1
  3. Cy-x+1 x+x+1
  4. Dy-x+1 y-x-1

Correct answer

D. y-x+1 y-x-1

Step-by-step solution

aligned & Let y- y- y- = x+ x+ x+ = z & y - z = z ^2 and x + z = z ^2 & y = z ^2+ z and x = z ^2- z & dy dz =2 z +1 and dx dz =2 z -1 also 2 z = y - x & dy dx = 2 z +1 2 z -1 = y - x +1 y - x -1 aligned

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