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  • Roma
  • Community Manager
2010-02-19T11:25:23+01:00

liczba: 4 - √2
liczba odwrotna: 1 / (4 - √2) = (4 + √2) / [(4 - √2)(4 + √2)] =( 4 + √2) /(16 - 2) = (4 + √2) / 14

5 3 5
2010-02-19T11:25:49+01:00
X = 4 - √2

liczba odwrotna y to taka, że:
1 = x*y
y = 1/x = 1/(4 - √2) = (4 + √2)/(4² - (√2)²) = (4 + √2)/(16 - 2) = (4 + √2)/14

y = (4 + √2)/14
jak masz pytania to pisz na pw
2 5 2