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受欢迎的代数 >

g(x)=2,x^2+x-1x=-1/2

解答

g (x) = 2, x^{2} + x - 1 x = - \frac{1}{2}

解答

(x = i \frac{2}{2}, x = - i \frac{2}{2}, g = 2 g = 2)

求解步骤

[g = 2 x^{2} + x - 1 \cdot x = - \frac{1}{2}]

解

x^{2} + x - 1 x = - \frac{1}{2} : x = i \frac{2}{2}, x = - i \frac{2}{2}

将解

x = i \frac{2}{2}, x = - i \frac{2}{2}

代入

g = 2

对于

g = 2

，用

i \frac{2}{2}

替代

x : g = 2

对于

g = 2

，用

- i \frac{2}{2}

替代

x : g = 2

将解代入原方程进行验证

因而，

g = 2, x^{2} + x - 1 x = - \frac{1}{2}

最后的解是

(x = i \frac{2}{2}, x = - i \frac{2}{2}, g = 2 g = 2)

作图

流行的例子

f(x)=x^2-2x+3,f(x)=-2x+7

f (x) = x^{2} - 2 x + 3, f (x) = - 2 x + 7

x + y - z = 4, y - z = 1

+ \frac{x}{8} x = 2 y, y = 3

(a^2)/x-(b^2)/y =0,a^2 b/x+b^2 a/y =a+b

\frac{a ^{2}}{x} - \frac{b ^{2}}{y} = 0, a^{2} \frac{b}{x} + b^{2} \frac{a}{y} = a + b

f(x)=6,x^2-5y^2+y=6

f (x) = 6, x^{2} - 5 y^{2} + y = 6