Ответ:
Объяснение:
y = x^2 / (1+x^2) = (1+x^2-1) / (1+x^2)
y = 1 - 1/(1+x^2)
1/(1+x^2) = 1 - y
1 + x^2 = 1/(1-y)
x^2 = 1/(1-y) - 1 = (1 - (1-y)) / (1-y)
x^2 = y/(1-y)
Для х >= 0 будет
x = √(y/(1-y))
Для x <= 0 будет
x = -√(y/(1-y))
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Answers & Comments
Ответ:
Объяснение:
y = x^2 / (1+x^2) = (1+x^2-1) / (1+x^2)
y = 1 - 1/(1+x^2)
1/(1+x^2) = 1 - y
1 + x^2 = 1/(1-y)
x^2 = 1/(1-y) - 1 = (1 - (1-y)) / (1-y)
x^2 = y/(1-y)
Для х >= 0 будет
x = √(y/(1-y))
Для x <= 0 будет
x = -√(y/(1-y))