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受欢迎的三角函数 >

3-4sin^3(x)=sin^3(x)

解答

3 - 4 sin^{3} (x) = sin^{3} (x)

解答

x = 1.00364 \dots + 2 πn, x = π - 1.00364 \dots + 2 πn

+1

度数

x = 57.50439 \dots^{\circ} + 36 0^{\circ} n, x = 122.49560 \dots^{\circ} + 36 0^{\circ} n

求解步骤

3 - 4 sin^{3} (x) = sin^{3} (x)

用替代法求解

3 - 4 sin^{3} (x) = sin^{3} (x)

令

: sin (x) = u

3 - 4 u^{3} = u^{3}

3 - 4 u^{3} = u^{3} : u = 3 \frac{3}{5}, u = - \frac{5 ^{\frac{2}{3}} 3 3}{10} + i \frac{3 ^{\frac{5}{6}} \cdot 5 ^{\frac{2}{3}}}{10}, u = - \frac{5 ^{\frac{2}{3}} 3 3}{10} - i \frac{3 ^{\frac{5}{6}} \cdot 5 ^{\frac{2}{3}}}{10}

3 - 4 u^{3} = u^{3}

将

3

到右边

3 - 4 u^{3} = u^{3}

两边减去

3

3 - 4 u^{3} - 3 = u^{3} - 3

化简

- 4 u^{3} = u^{3} - 3

- 4 u^{3} = u^{3} - 3

将

u^{3}

para o lado esquerdo

- 4 u^{3} = u^{3} - 3

两边减去

u^{3}

- 4 u^{3} - u^{3} = u^{3} - 3 - u^{3}

化简

- 5 u^{3} = - 3

- 5 u^{3} = - 3

两边除以

- 5

- 5 u^{3} = - 3

两边除以

- 5

\frac{- 5 u ^{3}}{- 5} = \frac{- 3}{- 5}

化简

u^{3} = \frac{3}{5}

u^{3} = \frac{3}{5}

对于

x^{3} = f (a)

解为

x = 3 f (a), 3 f (a) \frac{- 1 - 3 i}{2}, 3 f (a) \frac{- 1 + 3 i}{2}

u = 3 \frac{3}{5}, u = 3 \frac{3}{5} \frac{- 1 + 3 i}{2}, u = 3 \frac{3}{5} \frac{- 1 - 3 i}{2}

化简

3 \frac{3}{5} \frac{- 1 + 3 i}{2} : - \frac{5 ^{\frac{2}{3}} 3 3}{10} + i \frac{3 ^{\frac{5}{6}} \cdot 5 ^{\frac{2}{3}}}{10}

3 \frac{3}{5} \frac{- 1 + 3 i}{2}

分式相乘:

a \cdot \frac{b}{c} = \frac{a \cdot b}{c}

= \frac{( - 1 + 3 i ) 3 \frac{3}{5}}{2}

3 \frac{3}{5} = \frac{3 3}{3 5}

3 \frac{3}{5}

使用根式运算法则:

n \frac{a}{b} = \frac{n a}{n b},

假定

a \geq 0, b \geq 0

= \frac{3 3}{3 5}

= \frac{\frac{3 3}{3 5} ( - 1 + 3 i )}{2}

乘

(- 1 + 3 i) \frac{3 3}{3 5} : \frac{- 3 3 + 3 ^{\frac{5}{6}} i}{3 5}

(- 1 + 3 i) \frac{3 3}{3 5}

分式相乘:

a \cdot \frac{b}{c} = \frac{a \cdot b}{c}

= \frac{3 3 ( - 1 + 3 i )}{3 5}

乘开

33 (- 1 + 3 i) : - 33 + 3^{\frac{5}{6}} i

33 (- 1 + 3 i)

使用分配律:

a (b + c) = ab + a c

a = 33, b = - 1, c = 3 i

= 33 (- 1) + 333 i

使用加减运算法则

+ (- a) = - a

= - 1 \cdot 33 + 333 i

化简

- 1 \cdot 33 + 333 i : - 33 + 3^{\frac{5}{6}} i

- 1 \cdot 33 + 333 i

1 \cdot 33 = 33

1 \cdot 33

乘以:

1 \cdot 33 = 33

= 33

333 i = 3^{\frac{5}{6}} i

333 i

使用指数法则:

a^{b} \cdot a^{c} = a^{b + c}

333 = 3^{\frac{1}{3}} \cdot 3^{\frac{1}{2}} = 3^{\frac{1}{3} + \frac{1}{2}}

= 3^{\frac{1}{3} + \frac{1}{2}} i

3^{\frac{1}{3} + \frac{1}{2}} = 3^{\frac{5}{6}}

3^{\frac{1}{3} + \frac{1}{2}}

化简

\frac{1}{3} + \frac{1}{2} : \frac{5}{6}

\frac{1}{3} + \frac{1}{2}

3, 2

的最小公倍数:

6

3, 2

最小公倍数 (LCM)

3

质因数分解:

3

3

3

是质数，因此无法因数分解

= 3

2

质因数分解:

2

2

2

是质数，因此无法因数分解

= 2

将每个因子乘以它在

3

或

2

中出现的最多次数

= 3 \cdot 2

数字相乘:

3 \cdot 2 = 6

= 6

根据最小公倍数调整分式

将每个分子乘以其分母转变为最小公倍数所要乘以的同一数值

6

对于

\frac{1}{3} :

将分母和分子乘以

2

\frac{1}{3} = \frac{1 \cdot 2}{3 \cdot 2} = \frac{2}{6}

对于

\frac{1}{2} :

将分母和分子乘以

3

\frac{1}{2} = \frac{1 \cdot 3}{2 \cdot 3} = \frac{3}{6}

= \frac{2}{6} + \frac{3}{6}

因为分母相等，所以合并分式:

\frac{a}{c} \pm \frac{b}{c} = \frac{a \pm b}{c}

= \frac{2 + 3}{6}

数字相加:

2 + 3 = 5

= \frac{5}{6}

= 3^{\frac{5}{6}}

= 3^{\frac{5}{6}} i

= - 33 + 3^{\frac{5}{6}} i

= - 33 + 3^{\frac{5}{6}} i

= \frac{- 3 3 + 3 ^{\frac{5}{6}} i}{3 5}

= \frac{\frac{- 3 3 + 3 ^{\frac{5}{6}} i}{3 5}}{2}

使用分式法则:

\frac{\frac{b}{c}}{a} = \frac{b}{c \cdot a}

= \frac{- 3 3 + 3 ^{\frac{5}{6}} i}{3 5 \cdot 2}

\frac{- 3 3 + 3 ^{\frac{5}{6}} i}{2 3 5}

有理化:

\frac{5 ^{\frac{2}{3}} ( - 3 3 + 3 ^{\frac{5}{6}} i )}{10}

\frac{- 3 3 + 3 ^{\frac{5}{6}} i}{2 3 5}

乘以共轭根式

\frac{5 ^{\frac{2}{3}}}{5 ^{\frac{2}{3}}}

= \frac{( - 3 3 + 3 ^{\frac{5}{6}} i ) \cdot 5 ^{\frac{2}{3}}}{3 5 \cdot 2 \cdot 5 ^{\frac{2}{3}}}

35 \cdot 2 \cdot 5^{\frac{2}{3}} = 10

35 \cdot 2 \cdot 5^{\frac{2}{3}}

使用指数法则:

a^{b} \cdot a^{c} = a^{b + c}

5^{\frac{2}{3}} 35 = 5^{\frac{2}{3}} \cdot 5^{\frac{1}{3}} = 5^{\frac{2}{3} + \frac{1}{3}}

= 5^{\frac{2}{3} + \frac{1}{3}} \cdot 2

5^{\frac{2}{3} + \frac{1}{3}} = 5

5^{\frac{2}{3} + \frac{1}{3}}

合并分式

\frac{2}{3} + \frac{1}{3} : 1

使用法则

\frac{a}{c} \pm \frac{b}{c} = \frac{a \pm b}{c}

= \frac{2 + 1}{3}

数字相加:

2 + 1 = 3

= \frac{3}{3}

使用法则

\frac{a}{a} = 1

= 1

= 5^{1}

使用法则

a^{1} = a

= 5

= 5 \cdot 2

数字相乘:

5 \cdot 2 = 10

= 10

= \frac{5 ^{\frac{2}{3}} ( - 3 3 + 3 ^{\frac{5}{6}} i )}{10}

= \frac{5 ^{\frac{2}{3}} ( - 3 3 + 3 ^{\frac{5}{6}} i )}{10}

将

\frac{5 ^{\frac{2}{3}} ( - 3 3 + 3 ^{\frac{5}{6}} i )}{10}

改写成标准复数形式:

- \frac{3 3 \cdot 5 ^{\frac{2}{3}}}{10} + \frac{3 ^{\frac{5}{6}} \cdot 5 ^{\frac{2}{3}}}{10} i

\frac{5 ^{\frac{2}{3}} ( - 3 3 + 3 ^{\frac{5}{6}} i )}{10}

分解

10 : 2 \cdot 5

因式分解

10 = 2 \cdot 5

= \frac{5 ^{\frac{2}{3}} ( - 3 3 + 3 ^{\frac{5}{6}} i )}{2 \cdot 5}

消掉

\frac{5 ^{\frac{2}{3}} ( - 3 3 + 3 ^{\frac{5}{6}} i )}{2 \cdot 5} : \frac{- 3 3 + 3 ^{\frac{5}{6}} i}{2 \cdot 5 ^{\frac{1}{3}}}

\frac{5 ^{\frac{2}{3}} ( - 3 3 + 3 ^{\frac{5}{6}} i )}{2 \cdot 5}

使用指数法则:

\frac{x ^{a}}{x ^{b}} = \frac{1}{x ^{b - a}}

\frac{5 ^{\frac{2}{3}}}{5} = \frac{1}{5 ^{1 - \frac{2}{3}}}

= \frac{- 3 3 + 3 ^{\frac{5}{6}} i}{2 \cdot 5 ^{- \frac{2}{3} + 1}}

数字相减:

1 - \frac{2}{3} = \frac{1}{3}

= \frac{- 3 3 + 3 ^{\frac{5}{6}} i}{2 \cdot 5 ^{\frac{1}{3}}}

= \frac{- 3 3 + 3 ^{\frac{5}{6}} i}{2 \cdot 5 ^{\frac{1}{3}}}

5^{\frac{1}{3}} = 35

使用根式运算法则:

a^{\frac{1}{n}} = n a

5^{\frac{1}{3}} = 35

= \frac{- 3 3 + 3 ^{\frac{5}{6}} i}{2 3 5}

使用分式法则:

\frac{a \pm b}{c} = \frac{a}{c} \pm \frac{b}{c}

\frac{- 3 3 + 3 ^{\frac{5}{6}} i}{2 3 5} = - \frac{3 3}{2 3 5} + \frac{3 ^{\frac{5}{6}} i}{2 3 5}

= - \frac{3 3}{2 3 5} + \frac{3 ^{\frac{5}{6}} i}{2 3 5}

\frac{3 ^{\frac{5}{6}}}{2 3 5} = \frac{3 ^{\frac{5}{6}} \cdot 5 ^{\frac{2}{3}}}{10}

\frac{3 ^{\frac{5}{6}}}{2 3 5}

乘以共轭根式

\frac{5 ^{\frac{2}{3}}}{5 ^{\frac{2}{3}}}

= \frac{3 ^{\frac{5}{6}} \cdot 5 ^{\frac{2}{3}}}{2 3 5 \cdot 5 ^{\frac{2}{3}}}

235 \cdot 5^{\frac{2}{3}} = 10

235 \cdot 5^{\frac{2}{3}}

使用指数法则:

a^{b} \cdot a^{c} = a^{b + c}

5^{\frac{2}{3}} 35 = 5^{\frac{2}{3}} \cdot 5^{\frac{1}{3}} = 5^{\frac{2}{3} + \frac{1}{3}}

= 2 \cdot 5^{\frac{2}{3} + \frac{1}{3}}

5^{\frac{2}{3} + \frac{1}{3}} = 5

5^{\frac{2}{3} + \frac{1}{3}}

合并分式

\frac{2}{3} + \frac{1}{3} : 1

使用法则

\frac{a}{c} \pm \frac{b}{c} = \frac{a \pm b}{c}

= \frac{2 + 1}{3}

数字相加:

2 + 1 = 3

= \frac{3}{3}

使用法则

\frac{a}{a} = 1

= 1

= 5^{1}

使用法则

a^{1} = a

= 5

= 2 \cdot 5

数字相乘:

2 \cdot 5 = 10

= 10

= \frac{3 ^{\frac{5}{6}} \cdot 5 ^{\frac{2}{3}}}{10}

= - \frac{3 3}{2 3 5} + \frac{3 ^{\frac{5}{6}} \cdot 5 ^{\frac{2}{3}}}{10} i

- \frac{3 3}{2 3 5} = - \frac{3 3 \cdot 5 ^{\frac{2}{3}}}{10}

- \frac{3 3}{2 3 5}

乘以共轭根式

\frac{5 ^{\frac{2}{3}}}{5 ^{\frac{2}{3}}}

= - \frac{3 3 \cdot 5 ^{\frac{2}{3}}}{2 3 5 \cdot 5 ^{\frac{2}{3}}}

235 \cdot 5^{\frac{2}{3}} = 10

235 \cdot 5^{\frac{2}{3}}

使用指数法则:

a^{b} \cdot a^{c} = a^{b + c}

5^{\frac{2}{3}} 35 = 5^{\frac{2}{3}} \cdot 5^{\frac{1}{3}} = 5^{\frac{2}{3} + \frac{1}{3}}

= 2 \cdot 5^{\frac{2}{3} + \frac{1}{3}}

5^{\frac{2}{3} + \frac{1}{3}} = 5

5^{\frac{2}{3} + \frac{1}{3}}

合并分式

\frac{2}{3} + \frac{1}{3} : 1

使用法则

\frac{a}{c} \pm \frac{b}{c} = \frac{a \pm b}{c}

= \frac{2 + 1}{3}

数字相加:

2 + 1 = 3

= \frac{3}{3}

使用法则

\frac{a}{a} = 1

= 1

= 5^{1}

使用法则

a^{1} = a

= 5

= 2 \cdot 5

数字相乘:

2 \cdot 5 = 10

= 10

= - \frac{3 3 \cdot 5 ^{\frac{2}{3}}}{10}

= - \frac{3 3 \cdot 5 ^{\frac{2}{3}}}{10} + \frac{3 ^{\frac{5}{6}} \cdot 5 ^{\frac{2}{3}}}{10} i

= - \frac{3 3 \cdot 5 ^{\frac{2}{3}}}{10} + \frac{3 ^{\frac{5}{6}} \cdot 5 ^{\frac{2}{3}}}{10} i

化简

3 \frac{3}{5} \frac{- 1 - 3 i}{2} : - \frac{5 ^{\frac{2}{3}} 3 3}{10} - i \frac{3 ^{\frac{5}{6}} \cdot 5 ^{\frac{2}{3}}}{10}

3 \frac{3}{5} \frac{- 1 - 3 i}{2}

分式相乘:

a \cdot \frac{b}{c} = \frac{a \cdot b}{c}

= \frac{( - 1 - 3 i ) 3 \frac{3}{5}}{2}

3 \frac{3}{5} = \frac{3 3}{3 5}

3 \frac{3}{5}

使用根式运算法则:

n \frac{a}{b} = \frac{n a}{n b},

假定

a \geq 0, b \geq 0

= \frac{3 3}{3 5}

= \frac{\frac{3 3}{3 5} ( - 1 - 3 i )}{2}

乘

(- 1 - 3 i) \frac{3 3}{3 5} : \frac{- 3 3 - 3 ^{\frac{5}{6}} i}{3 5}

(- 1 - 3 i) \frac{3 3}{3 5}

分式相乘:

a \cdot \frac{b}{c} = \frac{a \cdot b}{c}

= \frac{3 3 ( - 1 - 3 i )}{3 5}

乘开

33 (- 1 - 3 i) : - 33 - 3^{\frac{5}{6}} i

33 (- 1 - 3 i)

使用分配律:

a (b - c) = ab - a c

a = 33, b = - 1, c = 3 i

= 33 (- 1) - 333 i

使用加减运算法则

+ (- a) = - a

= - 1 \cdot 33 - 333 i

化简

- 1 \cdot 33 - 333 i : - 33 - 3^{\frac{5}{6}} i

- 1 \cdot 33 - 333 i

1 \cdot 33 = 33

1 \cdot 33

乘以:

1 \cdot 33 = 33

= 33

333 i = 3^{\frac{5}{6}} i

333 i

使用指数法则:

a^{b} \cdot a^{c} = a^{b + c}

333 = 3^{\frac{1}{3}} \cdot 3^{\frac{1}{2}} = 3^{\frac{1}{3} + \frac{1}{2}}

= 3^{\frac{1}{3} + \frac{1}{2}} i

3^{\frac{1}{3} + \frac{1}{2}} = 3^{\frac{5}{6}}

3^{\frac{1}{3} + \frac{1}{2}}

化简

\frac{1}{3} + \frac{1}{2} : \frac{5}{6}

\frac{1}{3} + \frac{1}{2}

3, 2

的最小公倍数:

6

3, 2

最小公倍数 (LCM)

3

质因数分解:

3

3

3

是质数，因此无法因数分解

= 3

2

质因数分解:

2

2

2

是质数，因此无法因数分解

= 2

将每个因子乘以它在

3

或

2

中出现的最多次数

= 3 \cdot 2

数字相乘:

3 \cdot 2 = 6

= 6

根据最小公倍数调整分式

将每个分子乘以其分母转变为最小公倍数所要乘以的同一数值

6

对于

\frac{1}{3} :

将分母和分子乘以

2

\frac{1}{3} = \frac{1 \cdot 2}{3 \cdot 2} = \frac{2}{6}

对于

\frac{1}{2} :

将分母和分子乘以

3

\frac{1}{2} = \frac{1 \cdot 3}{2 \cdot 3} = \frac{3}{6}

= \frac{2}{6} + \frac{3}{6}

因为分母相等，所以合并分式:

\frac{a}{c} \pm \frac{b}{c} = \frac{a \pm b}{c}

= \frac{2 + 3}{6}

数字相加:

2 + 3 = 5

= \frac{5}{6}

= 3^{\frac{5}{6}}

= 3^{\frac{5}{6}} i

= - 33 - 3^{\frac{5}{6}} i

= - 33 - 3^{\frac{5}{6}} i

= \frac{- 3 3 - 3 ^{\frac{5}{6}} i}{3 5}

= \frac{\frac{- 3 3 - 3 ^{\frac{5}{6}} i}{3 5}}{2}

使用分式法则:

\frac{\frac{b}{c}}{a} = \frac{b}{c \cdot a}

= \frac{- 3 3 - 3 ^{\frac{5}{6}} i}{3 5 \cdot 2}

\frac{- 3 3 - 3 ^{\frac{5}{6}} i}{2 3 5}

有理化:

\frac{5 ^{\frac{2}{3}} ( - 3 3 - 3 ^{\frac{5}{6}} i )}{10}

\frac{- 3 3 - 3 ^{\frac{5}{6}} i}{2 3 5}

乘以共轭根式

\frac{5 ^{\frac{2}{3}}}{5 ^{\frac{2}{3}}}

= \frac{( - 3 3 - 3 ^{\frac{5}{6}} i ) \cdot 5 ^{\frac{2}{3}}}{3 5 \cdot 2 \cdot 5 ^{\frac{2}{3}}}

35 \cdot 2 \cdot 5^{\frac{2}{3}} = 10

35 \cdot 2 \cdot 5^{\frac{2}{3}}

使用指数法则:

a^{b} \cdot a^{c} = a^{b + c}

5^{\frac{2}{3}} 35 = 5^{\frac{2}{3}} \cdot 5^{\frac{1}{3}} = 5^{\frac{2}{3} + \frac{1}{3}}

= 5^{\frac{2}{3} + \frac{1}{3}} \cdot 2

5^{\frac{2}{3} + \frac{1}{3}} = 5

5^{\frac{2}{3} + \frac{1}{3}}

合并分式

\frac{2}{3} + \frac{1}{3} : 1

使用法则

\frac{a}{c} \pm \frac{b}{c} = \frac{a \pm b}{c}

= \frac{2 + 1}{3}

数字相加:

2 + 1 = 3

= \frac{3}{3}

使用法则

\frac{a}{a} = 1

= 1

= 5^{1}

使用法则

a^{1} = a

= 5

= 5 \cdot 2

数字相乘:

5 \cdot 2 = 10

= 10

= \frac{5 ^{\frac{2}{3}} ( - 3 3 - 3 ^{\frac{5}{6}} i )}{10}

= \frac{5 ^{\frac{2}{3}} ( - 3 3 - 3 ^{\frac{5}{6}} i )}{10}

将

\frac{5 ^{\frac{2}{3}} ( - 3 3 - 3 ^{\frac{5}{6}} i )}{10}

改写成标准复数形式:

- \frac{3 3 \cdot 5 ^{\frac{2}{3}}}{10} - \frac{3 ^{\frac{5}{6}} \cdot 5 ^{\frac{2}{3}}}{10} i

\frac{5 ^{\frac{2}{3}} ( - 3 3 - 3 ^{\frac{5}{6}} i )}{10}

分解

10 : 2 \cdot 5

因式分解

10 = 2 \cdot 5

= \frac{5 ^{\frac{2}{3}} ( - 3 3 - 3 ^{\frac{5}{6}} i )}{2 \cdot 5}

消掉

\frac{5 ^{\frac{2}{3}} ( - 3 3 - 3 ^{\frac{5}{6}} i )}{2 \cdot 5} : \frac{- 3 3 - 3 ^{\frac{5}{6}} i}{2 \cdot 5 ^{\frac{1}{3}}}

\frac{5 ^{\frac{2}{3}} ( - 3 3 - 3 ^{\frac{5}{6}} i )}{2 \cdot 5}

使用指数法则:

\frac{x ^{a}}{x ^{b}} = \frac{1}{x ^{b - a}}

\frac{5 ^{\frac{2}{3}}}{5} = \frac{1}{5 ^{1 - \frac{2}{3}}}

= \frac{- 3 3 - 3 ^{\frac{5}{6}} i}{2 \cdot 5 ^{- \frac{2}{3} + 1}}

数字相减:

1 - \frac{2}{3} = \frac{1}{3}

= \frac{- 3 3 - 3 ^{\frac{5}{6}} i}{2 \cdot 5 ^{\frac{1}{3}}}

= \frac{- 3 3 - 3 ^{\frac{5}{6}} i}{2 \cdot 5 ^{\frac{1}{3}}}

5^{\frac{1}{3}} = 35

使用根式运算法则:

a^{\frac{1}{n}} = n a

5^{\frac{1}{3}} = 35

= \frac{- 3 3 - 3 ^{\frac{5}{6}} i}{2 3 5}

使用分式法则:

\frac{a \pm b}{c} = \frac{a}{c} \pm \frac{b}{c}

\frac{- 3 3 - 3 ^{\frac{5}{6}} i}{2 3 5} = - \frac{3 3}{2 3 5} - \frac{3 ^{\frac{5}{6}} i}{2 3 5}

= - \frac{3 3}{2 3 5} - \frac{3 ^{\frac{5}{6}} i}{2 3 5}

- \frac{3 ^{\frac{5}{6}}}{2 3 5} = - \frac{3 ^{\frac{5}{6}} \cdot 5 ^{\frac{2}{3}}}{10}

- \frac{3 ^{\frac{5}{6}}}{2 3 5}

乘以共轭根式

\frac{5 ^{\frac{2}{3}}}{5 ^{\frac{2}{3}}}

= - \frac{3 ^{\frac{5}{6}} \cdot 5 ^{\frac{2}{3}}}{2 3 5 \cdot 5 ^{\frac{2}{3}}}

235 \cdot 5^{\frac{2}{3}} = 10

235 \cdot 5^{\frac{2}{3}}

使用指数法则:

a^{b} \cdot a^{c} = a^{b + c}

5^{\frac{2}{3}} 35 = 5^{\frac{2}{3}} \cdot 5^{\frac{1}{3}} = 5^{\frac{2}{3} + \frac{1}{3}}

= 2 \cdot 5^{\frac{2}{3} + \frac{1}{3}}

5^{\frac{2}{3} + \frac{1}{3}} = 5

5^{\frac{2}{3} + \frac{1}{3}}

合并分式

\frac{2}{3} + \frac{1}{3} : 1

使用法则

\frac{a}{c} \pm \frac{b}{c} = \frac{a \pm b}{c}

= \frac{2 + 1}{3}

数字相加:

2 + 1 = 3

= \frac{3}{3}

使用法则

\frac{a}{a} = 1

= 1

= 5^{1}

使用法则

a^{1} = a

= 5

= 2 \cdot 5

数字相乘:

2 \cdot 5 = 10

= 10

= - \frac{3 ^{\frac{5}{6}} \cdot 5 ^{\frac{2}{3}}}{10}

= - \frac{3 3}{2 3 5} - \frac{3 ^{\frac{5}{6}} \cdot 5 ^{\frac{2}{3}}}{10} i

- \frac{3 3}{2 3 5} = - \frac{3 3 \cdot 5 ^{\frac{2}{3}}}{10}

- \frac{3 3}{2 3 5}

乘以共轭根式

\frac{5 ^{\frac{2}{3}}}{5 ^{\frac{2}{3}}}

= - \frac{3 3 \cdot 5 ^{\frac{2}{3}}}{2 3 5 \cdot 5 ^{\frac{2}{3}}}

235 \cdot 5^{\frac{2}{3}} = 10

235 \cdot 5^{\frac{2}{3}}

使用指数法则:

a^{b} \cdot a^{c} = a^{b + c}

5^{\frac{2}{3}} 35 = 5^{\frac{2}{3}} \cdot 5^{\frac{1}{3}} = 5^{\frac{2}{3} + \frac{1}{3}}

= 2 \cdot 5^{\frac{2}{3} + \frac{1}{3}}

5^{\frac{2}{3} + \frac{1}{3}} = 5

5^{\frac{2}{3} + \frac{1}{3}}

合并分式

\frac{2}{3} + \frac{1}{3} : 1

使用法则

\frac{a}{c} \pm \frac{b}{c} = \frac{a \pm b}{c}

= \frac{2 + 1}{3}

数字相加:

2 + 1 = 3

= \frac{3}{3}

使用法则

\frac{a}{a} = 1

= 1

= 5^{1}

使用法则

a^{1} = a

= 5

= 2 \cdot 5

数字相乘:

2 \cdot 5 = 10

= 10

= - \frac{3 3 \cdot 5 ^{\frac{2}{3}}}{10}

= - \frac{3 3 \cdot 5 ^{\frac{2}{3}}}{10} - \frac{3 ^{\frac{5}{6}} \cdot 5 ^{\frac{2}{3}}}{10} i

= - \frac{3 3 \cdot 5 ^{\frac{2}{3}}}{10} - \frac{3 ^{\frac{5}{6}} \cdot 5 ^{\frac{2}{3}}}{10} i

u = 3 \frac{3}{5}, u = - \frac{5 ^{\frac{2}{3}} 3 3}{10} + i \frac{3 ^{\frac{5}{6}} \cdot 5 ^{\frac{2}{3}}}{10}, u = - \frac{5 ^{\frac{2}{3}} 3 3}{10} - i \frac{3 ^{\frac{5}{6}} \cdot 5 ^{\frac{2}{3}}}{10}

u = sin (x)

代回

sin (x) = 3 \frac{3}{5}, sin (x) = - \frac{5 ^{\frac{2}{3}} 3 3}{10} + i \frac{3 ^{\frac{5}{6}} \cdot 5 ^{\frac{2}{3}}}{10}, sin (x) = - \frac{5 ^{\frac{2}{3}} 3 3}{10} - i \frac{3 ^{\frac{5}{6}} \cdot 5 ^{\frac{2}{3}}}{10}

sin (x) = 3 \frac{3}{5}, sin (x) = - \frac{5 ^{\frac{2}{3}} 3 3}{10} + i \frac{3 ^{\frac{5}{6}} \cdot 5 ^{\frac{2}{3}}}{10}, sin (x) = - \frac{5 ^{\frac{2}{3}} 3 3}{10} - i \frac{3 ^{\frac{5}{6}} \cdot 5 ^{\frac{2}{3}}}{10}

sin (x) = 3 \frac{3}{5} : x = arcsin (3 \frac{3}{5}) + 2 πn, x = π - arcsin (3 \frac{3}{5}) + 2 πn

sin (x) = 3 \frac{3}{5}

使用反三角函数性质

sin (x) = 3 \frac{3}{5}

sin (x) = 3 \frac{3}{5}

的通解

sin (x) = a \Rightarrow x = arcsin (a) + 2 πn, x = π - arcsin (a) + 2 πn

x = arcsin (3 \frac{3}{5}) + 2 πn, x = π - arcsin (3 \frac{3}{5}) + 2 πn

x = arcsin (3 \frac{3}{5}) + 2 πn, x = π - arcsin (3 \frac{3}{5}) + 2 πn

sin (x) = - \frac{5 ^{\frac{2}{3}} 3 3}{10} + i \frac{3 ^{\frac{5}{6}} \cdot 5 ^{\frac{2}{3}}}{10} :

无解

sin (x) = - \frac{5 ^{\frac{2}{3}} 3 3}{10} + i \frac{3 ^{\frac{5}{6}} \cdot 5 ^{\frac{2}{3}}}{10}

无解

sin (x) = - \frac{5 ^{\frac{2}{3}} 3 3}{10} - i \frac{3 ^{\frac{5}{6}} \cdot 5 ^{\frac{2}{3}}}{10} :

无解

sin (x) = - \frac{5 ^{\frac{2}{3}} 3 3}{10} - i \frac{3 ^{\frac{5}{6}} \cdot 5 ^{\frac{2}{3}}}{10}

无解

合并所有解

x = arcsin (3 \frac{3}{5}) + 2 πn, x = π - arcsin (3 \frac{3}{5}) + 2 πn

以小数形式表示解

x = 1.00364 \dots + 2 πn, x = π - 1.00364 \dots + 2 πn

作图

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