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受欢迎的代数 >

solvefor x,f-1(f)=f(f-1(x))

解答

求解

x, f - 1 (f) = f (f - 1 (x))

解答

x = f

求解步骤

f - 1 \cdot (f) = f (f - 1 \cdot (x))

交换两边

f (f - 1 \cdot x) = f - 1 \cdot f

去除括号:

(a) = a

f (f - 1 \cdot x) = f - 1 \cdot f

同类项相加:

f - 1 \cdot f = 0

f (f - 1 \cdot x) = 0

使用零因数法则： If

ab = 0

then

a = 0

or

b = 0

f - 1 \cdot x = 0

化简

f - x = 0

将

f

到右边

- x = - f

两边除以

- 1

x = f

作图

流行的例子

solvefor t,A=p+prt

so l v e f or t, A = p + p r t

\frac{x}{30} = \frac{3}{4}

15 = 5 (2 m - 5)

solvefor E,V=IR-E

so l v e f or E, V = I R - E

solvefor x,y+4x=10x-6

so l v e f or x, y + 4 x = 10 x - 6