. | 2 | 3 | 5 | 18 | 9 | | 7 | 10 | |

  1. I.
  2. I. .
  3. II . .
  4. II. ֲ
  5. II.
  6. II.
  7. II.

y = f (x), x = g (y).

5. x = g (y) g '(y) ? 0, y = f (x),

x ?x, f ?y = f (x + ?x) - f (x). , g ?x, ?y' : ?x = g (y + ?y) - g (y).



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