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受欢迎的代数 >

a/((x-1))+b/((x+2))=((5x+1))/(((x-1)(x+2)))

解答

\frac{a}{( x - 1 )} + \frac{b}{( x + 2 )} = \frac{( 5 x + 1 )}{( ( x - 1 ) ( x + 2 ) )}

解答

x = \frac{1 - 2 a + b}{a + b - 5}; a \neq = - b + 5

求解步骤

\frac{a}{( x - 1 )} + \frac{b}{( x + 2 )} = \frac{( 5 x + 1 )}{( ( x - 1 ) ( x + 2 ) )}

乘以最小公倍数

a (x + 2) + b (x - 1) = 5 x + 1

乘开

a (x + 2) : a x + 2 a

a x + 2 a + b (x - 1) = 5 x + 1

乘开

b (x - 1) : b x - b

a x + 2 a + b x - b = 5 x + 1

将

2 a

到右边

a x + b x - b = 5 x + 1 - 2 a

将

b

到右边

a x + b x = 5 x + 1 - 2 a + b

将

5 x

para o lado esquerdo

a x + b x - 5 x = 1 - 2 a + b

分解

a x + b x - 5 x : x (a + b - 5)

x (a + b - 5) = 1 - 2 a + b

两边除以

a + b - 5; a \neq = - b + 5

x = \frac{1 - 2 a + b}{a + b - 5}; a \neq = - b + 5

作图

流行的例子

(r^2)/(|(1-r^2)|)=1.02

\frac{r ^{2}}{∣ ( 1 - r ^{2} ) ∣} = 1.02

|(2x)/(x-2)|+|x|=(x^2)/(|x-2|)

\frac{2 x}{x - 2} + ∣ x ∣ = \frac{x ^{2}}{∣ x - 2 ∣}

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

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

((n+1)!)/((n-1)!)=20

\frac{( n + 1 ) !}{( n - 1 ) !} = 20

solvefor t,s= d/((t-t_{0))}

so l v e f or t, s = \frac{d}{( t - t _{0} )}