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受欢迎的三角函数 >

cos^3(x)=66

解答

cos^{3} (x) = 66

解答

x \in R 无解

求解步骤

cos^{3} (x) = 66

用替代法求解

cos^{3} (x) = 66

令

: cos (x) = u

u^{3} = 66

u^{3} = 66 : u = 366, u = - 3 \frac{33}{4} + i \frac{3 ^{\frac{5}{6}} 3 22}{2}, u = - 3 \frac{33}{4} - i \frac{3 ^{\frac{5}{6}} 3 22}{2}

u^{3} = 66

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 = 366, u = 366 \frac{- 1 + 3 i}{2}, u = 366 \frac{- 1 - 3 i}{2}

化简

366 \frac{- 1 + 3 i}{2} : - 3 \frac{33}{4} + i \frac{3 ^{\frac{5}{6}} 3 22}{2}

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

分式相乘:

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

= \frac{( - 1 + 3 i ) 3 66}{2}

分解

366 : 3233311

因式分解

66 = 2 \cdot 3 \cdot 11

= 3 2 \cdot 3 \cdot 11

使用根式运算法则:

n ab = n a n b

= 3233311

= \frac{3 2 3 3 3 11 ( - 1 + 3 i )}{2}

消掉

\frac{( - 1 + 3 i ) 3 2 3 3 3 11}{2} : \frac{3 3 3 11 ( - 1 + 3 i )}{2 ^{\frac{2}{3}}}

\frac{( - 1 + 3 i ) 3 2 3 3 3 11}{2}

使用根式运算法则:

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

32 = 2^{\frac{1}{3}}

= \frac{2 ^{\frac{1}{3}} 3 3 3 11 ( - 1 + 3 i )}{2}

使用指数法则:

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

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

= \frac{3 3 3 11 ( - 1 + 3 i )}{2 ^{1 - \frac{1}{3}}}

数字相减:

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

= \frac{3 3 3 11 ( - 1 + 3 i )}{2 ^{\frac{2}{3}}}

= \frac{3 3 3 11 ( - 1 + 3 i )}{2 ^{\frac{2}{3}}}

化简

33311 (- 1 + 3 i) : 333 (- 1 + 3 i)

33311 (- 1 + 3 i)

使用根式运算法则:

n a n b = n a \cdot b

33311 = 3 3 \cdot 11

= (- 1 + 3 i) 3 3 \cdot 11

数字相乘:

3 \cdot 11 = 33

= 333 (- 1 + 3 i)

= \frac{3 33 ( - 1 + 3 i )}{2 ^{\frac{2}{3}}}

乘开

333 (- 1 + 3 i) : - 333 + 311 \cdot 3^{\frac{5}{6}} i

333 (- 1 + 3 i)

使用分配律:

a (b + c) = ab + a c

a = 333, b = - 1, c = 3 i

= 333 (- 1) + 3333 i

使用加减运算法则

+ (- a) = - a

= - 1 \cdot 333 + 3333 i

化简

- 1 \cdot 333 + 3333 i : - 333 + 311 \cdot 3^{\frac{5}{6}} i

- 1 \cdot 333 + 3333 i

1 \cdot 333 = 333

1 \cdot 333

乘以:

1 \cdot 333 = 333

= 333

3333 i = 311 \cdot 3^{\frac{5}{6}} i

3333 i

分解整数

33 = 3 \cdot 11

= 3 3 \cdot 11 3 i

使用根式运算法则:

n ab = n a n b

3 3 \cdot 11 = 33311

= 333113 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}}

= 311 \cdot 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}}

= 311 \cdot 3^{\frac{5}{6}} i

= - 333 + 311 \cdot 3^{\frac{5}{6}} i

= - 333 + 311 \cdot 3^{\frac{5}{6}} i

= \frac{- 3 33 + 3 11 \cdot 3 ^{\frac{5}{6}} i}{2 ^{\frac{2}{3}}}

\frac{- 3 33 + 3 11 \cdot 3 ^{\frac{5}{6}} i}{2 ^{\frac{2}{3}}}

有理化:

\frac{3 2 ( - 3 33 + 3 11 \cdot 3 ^{\frac{5}{6}} i )}{2}

\frac{- 3 33 + 3 11 \cdot 3 ^{\frac{5}{6}} i}{2 ^{\frac{2}{3}}}

乘以共轭根式

\frac{3 2}{3 2}

= \frac{( - 3 33 + 3 11 \cdot 3 ^{\frac{5}{6}} i ) 3 2}{2 ^{\frac{2}{3}} 3 2}

2^{\frac{2}{3}} 32 = 2

2^{\frac{2}{3}} 32

使用指数法则:

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

2^{\frac{2}{3}} 32 = 2^{\frac{2}{3}} \cdot 2^{\frac{1}{3}} = 2^{\frac{2}{3} + \frac{1}{3}}

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

化简

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

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

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 + 1}{3}

数字相加:

2 + 1 = 3

= \frac{3}{3}

使用法则

\frac{a}{a} = 1

= 1

= 2^{1}

使用法则

a^{1} = a

= 2

= \frac{3 2 ( - 3 33 + 3 11 \cdot 3 ^{\frac{5}{6}} i )}{2}

= \frac{3 2 ( - 3 33 + 3 11 \cdot 3 ^{\frac{5}{6}} i )}{2}

将

\frac{3 2 ( - 3 33 + 3 11 \cdot 3 ^{\frac{5}{6}} i )}{2}

改写成标准复数形式:

- 3 \frac{33}{4} + \frac{3 22 \cdot 3 ^{\frac{5}{6}}}{2} i

\frac{3 2 ( - 3 33 + 3 11 \cdot 3 ^{\frac{5}{6}} i )}{2}

使用根式运算法则:

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

32 = 2^{\frac{1}{3}}

= \frac{2 ^{\frac{1}{3}} ( - 3 33 + 3 11 \cdot 3 ^{\frac{5}{6}} i )}{2}

使用指数法则:

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

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

= \frac{- 3 33 + 3 11 \cdot 3 ^{\frac{5}{6}} i}{2 ^{1 - \frac{1}{3}}}

数字相减:

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

= \frac{- 3 33 + 3 11 \cdot 3 ^{\frac{5}{6}} i}{2 ^{\frac{2}{3}}}

使用分式法则:

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

\frac{- 3 33 + 3 11 \cdot 3 ^{\frac{5}{6}} i}{2 ^{\frac{2}{3}}} = - \frac{3 33}{2 ^{\frac{2}{3}}} + \frac{3 11 \cdot 3 ^{\frac{5}{6}} i}{2 ^{\frac{2}{3}}}

= - \frac{3 33}{2 ^{\frac{2}{3}}} + \frac{3 11 \cdot 3 ^{\frac{5}{6}} i}{2 ^{\frac{2}{3}}}

\frac{3 33}{2 ^{\frac{2}{3}}} = 3 \frac{33}{4}

\frac{3 33}{2 ^{\frac{2}{3}}}

333 = 3 3^{\frac{1}{3}}

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

合并相同指数项 :

\frac{x ^{\frac{a}{m}}}{y ^{\frac{b}{m}}} = m \frac{x ^{a}}{y ^{b}}

= 3 \frac{33}{2 ^{2}}

2^{2} = 4

= 3 \frac{33}{4}

= - 3 \frac{33}{4} + \frac{3 11 \cdot 3 ^{\frac{5}{6}} i}{2 ^{\frac{2}{3}}}

\frac{3 11 \cdot 3 ^{\frac{5}{6}}}{2 ^{\frac{2}{3}}} = \frac{3 22 \cdot 3 ^{\frac{5}{6}}}{2}

\frac{3 11 \cdot 3 ^{\frac{5}{6}}}{2 ^{\frac{2}{3}}}

乘以共轭根式

\frac{3 2}{3 2}

= \frac{3 11 \cdot 3 ^{\frac{5}{6}} 3 2}{2 ^{\frac{2}{3}} 3 2}

311 \cdot 3^{\frac{5}{6}} 32 = 322 \cdot 3^{\frac{5}{6}}

311 \cdot 3^{\frac{5}{6}} 32

使用根式运算法则:

n a n b = n a \cdot b

31132 = 3 11 \cdot 2

= 3^{\frac{5}{6}} 3 11 \cdot 2

数字相乘:

11 \cdot 2 = 22

= 322 \cdot 3^{\frac{5}{6}}

2^{\frac{2}{3}} 32 = 2

2^{\frac{2}{3}} 32

使用指数法则:

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

2^{\frac{2}{3}} 32 = 2^{\frac{2}{3}} \cdot 2^{\frac{1}{3}} = 2^{\frac{2}{3} + \frac{1}{3}}

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

化简

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

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

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 + 1}{3}

数字相加:

2 + 1 = 3

= \frac{3}{3}

使用法则

\frac{a}{a} = 1

= 1

= 2^{1}

使用法则

a^{1} = a

= 2

= \frac{3 22 \cdot 3 ^{\frac{5}{6}}}{2}

= - 3 \frac{33}{4} + \frac{3 22 \cdot 3 ^{\frac{5}{6}}}{2} i

= - 3 \frac{33}{4} + \frac{3 22 \cdot 3 ^{\frac{5}{6}}}{2} i

化简

366 \frac{- 1 - 3 i}{2} : - 3 \frac{33}{4} - i \frac{3 ^{\frac{5}{6}} 3 22}{2}

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

分式相乘:

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

= \frac{( - 1 - 3 i ) 3 66}{2}

分解

366 : 3233311

因式分解

66 = 2 \cdot 3 \cdot 11

= 3 2 \cdot 3 \cdot 11

使用根式运算法则:

n ab = n a n b

= 3233311

= \frac{3 2 3 3 3 11 ( - 1 - 3 i )}{2}

消掉

\frac{( - 1 - 3 i ) 3 2 3 3 3 11}{2} : \frac{3 3 3 11 ( - 1 - 3 i )}{2 ^{\frac{2}{3}}}

\frac{( - 1 - 3 i ) 3 2 3 3 3 11}{2}

使用根式运算法则:

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

32 = 2^{\frac{1}{3}}

= \frac{2 ^{\frac{1}{3}} 3 3 3 11 ( - 1 - 3 i )}{2}

使用指数法则:

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

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

= \frac{3 3 3 11 ( - 1 - 3 i )}{2 ^{1 - \frac{1}{3}}}

数字相减:

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

= \frac{3 3 3 11 ( - 1 - 3 i )}{2 ^{\frac{2}{3}}}

= \frac{3 3 3 11 ( - 1 - 3 i )}{2 ^{\frac{2}{3}}}

化简

33311 (- 1 - 3 i) : 333 (- 1 - 3 i)

33311 (- 1 - 3 i)

使用根式运算法则:

n a n b = n a \cdot b

33311 = 3 3 \cdot 11

= (- 1 - 3 i) 3 3 \cdot 11

数字相乘:

3 \cdot 11 = 33

= 333 (- 1 - 3 i)

= \frac{3 33 ( - 1 - 3 i )}{2 ^{\frac{2}{3}}}

乘开

333 (- 1 - 3 i) : - 333 - 311 \cdot 3^{\frac{5}{6}} i

333 (- 1 - 3 i)

使用分配律:

a (b - c) = ab - a c

a = 333, b = - 1, c = 3 i

= 333 (- 1) - 3333 i

使用加减运算法则

+ (- a) = - a

= - 1 \cdot 333 - 3333 i

化简

- 1 \cdot 333 - 3333 i : - 333 - 311 \cdot 3^{\frac{5}{6}} i

- 1 \cdot 333 - 3333 i

1 \cdot 333 = 333

1 \cdot 333

乘以:

1 \cdot 333 = 333

= 333

3333 i = 311 \cdot 3^{\frac{5}{6}} i

3333 i

分解整数

33 = 3 \cdot 11

= 3 3 \cdot 11 3 i

使用根式运算法则:

n ab = n a n b

3 3 \cdot 11 = 33311

= 333113 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}}

= 311 \cdot 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}}

= 311 \cdot 3^{\frac{5}{6}} i

= - 333 - 311 \cdot 3^{\frac{5}{6}} i

= - 333 - 311 \cdot 3^{\frac{5}{6}} i

= \frac{- 3 33 - 3 11 \cdot 3 ^{\frac{5}{6}} i}{2 ^{\frac{2}{3}}}

\frac{- 3 33 - 3 11 \cdot 3 ^{\frac{5}{6}} i}{2 ^{\frac{2}{3}}}

有理化:

\frac{3 2 ( - 3 33 - 3 11 \cdot 3 ^{\frac{5}{6}} i )}{2}

\frac{- 3 33 - 3 11 \cdot 3 ^{\frac{5}{6}} i}{2 ^{\frac{2}{3}}}

乘以共轭根式

\frac{3 2}{3 2}

= \frac{( - 3 33 - 3 11 \cdot 3 ^{\frac{5}{6}} i ) 3 2}{2 ^{\frac{2}{3}} 3 2}

2^{\frac{2}{3}} 32 = 2

2^{\frac{2}{3}} 32

使用指数法则:

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

2^{\frac{2}{3}} 32 = 2^{\frac{2}{3}} \cdot 2^{\frac{1}{3}} = 2^{\frac{2}{3} + \frac{1}{3}}

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

化简

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

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

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 + 1}{3}

数字相加:

2 + 1 = 3

= \frac{3}{3}

使用法则

\frac{a}{a} = 1

= 1

= 2^{1}

使用法则

a^{1} = a

= 2

= \frac{3 2 ( - 3 33 - 3 11 \cdot 3 ^{\frac{5}{6}} i )}{2}

= \frac{3 2 ( - 3 33 - 3 11 \cdot 3 ^{\frac{5}{6}} i )}{2}

将

\frac{3 2 ( - 3 33 - 3 11 \cdot 3 ^{\frac{5}{6}} i )}{2}

改写成标准复数形式:

- 3 \frac{33}{4} - \frac{3 22 \cdot 3 ^{\frac{5}{6}}}{2} i

\frac{3 2 ( - 3 33 - 3 11 \cdot 3 ^{\frac{5}{6}} i )}{2}

使用根式运算法则:

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

32 = 2^{\frac{1}{3}}

= \frac{2 ^{\frac{1}{3}} ( - 3 33 - 3 11 \cdot 3 ^{\frac{5}{6}} i )}{2}

使用指数法则:

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

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

= \frac{- 3 33 - 3 11 \cdot 3 ^{\frac{5}{6}} i}{2 ^{1 - \frac{1}{3}}}

数字相减:

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

= \frac{- 3 33 - 3 11 \cdot 3 ^{\frac{5}{6}} i}{2 ^{\frac{2}{3}}}

使用分式法则:

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

\frac{- 3 33 - 3 11 \cdot 3 ^{\frac{5}{6}} i}{2 ^{\frac{2}{3}}} = - \frac{3 33}{2 ^{\frac{2}{3}}} - \frac{3 11 \cdot 3 ^{\frac{5}{6}} i}{2 ^{\frac{2}{3}}}

= - \frac{3 33}{2 ^{\frac{2}{3}}} - \frac{3 11 \cdot 3 ^{\frac{5}{6}} i}{2 ^{\frac{2}{3}}}

\frac{3 33}{2 ^{\frac{2}{3}}} = 3 \frac{33}{4}

\frac{3 33}{2 ^{\frac{2}{3}}}

333 = 3 3^{\frac{1}{3}}

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

合并相同指数项 :

\frac{x ^{\frac{a}{m}}}{y ^{\frac{b}{m}}} = m \frac{x ^{a}}{y ^{b}}

= 3 \frac{33}{2 ^{2}}

2^{2} = 4

= 3 \frac{33}{4}

= - 3 \frac{33}{4} - \frac{3 11 \cdot 3 ^{\frac{5}{6}} i}{2 ^{\frac{2}{3}}}

- \frac{3 11 \cdot 3 ^{\frac{5}{6}}}{2 ^{\frac{2}{3}}} = - \frac{3 22 \cdot 3 ^{\frac{5}{6}}}{2}

- \frac{3 11 \cdot 3 ^{\frac{5}{6}}}{2 ^{\frac{2}{3}}}

乘以共轭根式

\frac{3 2}{3 2}

= - \frac{3 11 \cdot 3 ^{\frac{5}{6}} 3 2}{2 ^{\frac{2}{3}} 3 2}

311 \cdot 3^{\frac{5}{6}} 32 = 322 \cdot 3^{\frac{5}{6}}

311 \cdot 3^{\frac{5}{6}} 32

使用根式运算法则:

n a n b = n a \cdot b

31132 = 3 11 \cdot 2

= 3^{\frac{5}{6}} 3 11 \cdot 2

数字相乘:

11 \cdot 2 = 22

= 322 \cdot 3^{\frac{5}{6}}

2^{\frac{2}{3}} 32 = 2

2^{\frac{2}{3}} 32

使用指数法则:

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

2^{\frac{2}{3}} 32 = 2^{\frac{2}{3}} \cdot 2^{\frac{1}{3}} = 2^{\frac{2}{3} + \frac{1}{3}}

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

化简

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

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

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 + 1}{3}

数字相加:

2 + 1 = 3

= \frac{3}{3}

使用法则

\frac{a}{a} = 1

= 1

= 2^{1}

使用法则

a^{1} = a

= 2

= - \frac{3 22 \cdot 3 ^{\frac{5}{6}}}{2}

= - 3 \frac{33}{4} - \frac{3 22 \cdot 3 ^{\frac{5}{6}}}{2} i

= - 3 \frac{33}{4} - \frac{3 22 \cdot 3 ^{\frac{5}{6}}}{2} i

u = 366, u = - 3 \frac{33}{4} + i \frac{3 ^{\frac{5}{6}} 3 22}{2}, u = - 3 \frac{33}{4} - i \frac{3 ^{\frac{5}{6}} 3 22}{2}

u = cos (x)

代回

cos (x) = 366, cos (x) = - 3 \frac{33}{4} + i \frac{3 ^{\frac{5}{6}} 3 22}{2}, cos (x) = - 3 \frac{33}{4} - i \frac{3 ^{\frac{5}{6}} 3 22}{2}

cos (x) = 366, cos (x) = - 3 \frac{33}{4} + i \frac{3 ^{\frac{5}{6}} 3 22}{2}, cos (x) = - 3 \frac{33}{4} - i \frac{3 ^{\frac{5}{6}} 3 22}{2}

cos (x) = 366 :

无解

cos (x) = 366

- 1 \leq cos (x) \leq 1

无解

cos (x) = - 3 \frac{33}{4} + i \frac{3 ^{\frac{5}{6}} 3 22}{2} :

无解

cos (x) = - 3 \frac{33}{4} + i \frac{3 ^{\frac{5}{6}} 3 22}{2}

无解

cos (x) = - 3 \frac{33}{4} - i \frac{3 ^{\frac{5}{6}} 3 22}{2} :

无解

cos (x) = - 3 \frac{33}{4} - i \frac{3 ^{\frac{5}{6}} 3 22}{2}

无解

合并所有解

x \in R 无解

作图

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