solvefor y,sqrt(xy)=1

解答

求解

y, x y = 1

y = \frac{1}{x} {x < 0 or x > 0}

求解步骤

x y = 1

两边进行平方:

x y = 1

x y = 1

解

x y = 1 : y = \frac{1}{x}

y = \frac{1}{x}

验证解:

y = \frac{1}{x} {x < 0 or x > 0}

解是

y = \frac{1}{x} {x < 0 or x > 0}

x^{2} + 3 = 2 x - 1

x + x + x + x = 2

3 - 2 v + 17 = 20

y - 3 + y = 3

34 - 3 x = x - 2