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3cosx-2sin²x=0

3cosx-2sin²x=0 уравнение

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Численное решение:

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Решение

Вы ввели [src]
                2       
3*cos(x) - 2*sin (x) = 0
$$- 2 \sin^{2}{\left(x \right)} + 3 \cos{\left(x \right)} = 0$$
График
Быстрый ответ [src]
      -pi 
x_1 = ----
       3  
$$x_{1} = - \frac{\pi}{3}$$
      pi
x_2 = --
      3 
$$x_{2} = \frac{\pi}{3}$$
          /     /  ___\\         /     /  ___\\
x_3 = 2*im\atanh\\/ 3 // - 2*I*re\atanh\\/ 3 //
$$x_{3} = 2 \operatorname{im}{\left(\operatorname{atanh}{\left(\sqrt{3} \right)}\right)} - 2 i \operatorname{re}{\left(\operatorname{atanh}{\left(\sqrt{3} \right)}\right)}$$
            /     /  ___\\         /     /  ___\\
x_4 = - 2*im\atanh\\/ 3 // + 2*I*re\atanh\\/ 3 //
$$x_{4} = - 2 \operatorname{im}{\left(\operatorname{atanh}{\left(\sqrt{3} \right)}\right)} + 2 i \operatorname{re}{\left(\operatorname{atanh}{\left(\sqrt{3} \right)}\right)}$$
Сумма и произведение корней [src]
сумма
-pi    pi       /     /  ___\\         /     /  ___\\         /     /  ___\\         /     /  ___\\
---- + -- + 2*im\atanh\\/ 3 // - 2*I*re\atanh\\/ 3 // + - 2*im\atanh\\/ 3 // + 2*I*re\atanh\\/ 3 //
 3     3                                                                                           
$$\left(- \frac{\pi}{3}\right) + \left(\frac{\pi}{3}\right) + \left(2 \operatorname{im}{\left(\operatorname{atanh}{\left(\sqrt{3} \right)}\right)} - 2 i \operatorname{re}{\left(\operatorname{atanh}{\left(\sqrt{3} \right)}\right)}\right) + \left(- 2 \operatorname{im}{\left(\operatorname{atanh}{\left(\sqrt{3} \right)}\right)} + 2 i \operatorname{re}{\left(\operatorname{atanh}{\left(\sqrt{3} \right)}\right)}\right)$$
=
0
$$0$$
произведение
-pi    pi       /     /  ___\\         /     /  ___\\         /     /  ___\\         /     /  ___\\
---- * -- * 2*im\atanh\\/ 3 // - 2*I*re\atanh\\/ 3 // * - 2*im\atanh\\/ 3 // + 2*I*re\atanh\\/ 3 //
 3     3                                                                                           
$$\left(- \frac{\pi}{3}\right) * \left(\frac{\pi}{3}\right) * \left(2 \operatorname{im}{\left(\operatorname{atanh}{\left(\sqrt{3} \right)}\right)} - 2 i \operatorname{re}{\left(\operatorname{atanh}{\left(\sqrt{3} \right)}\right)}\right) * \left(- 2 \operatorname{im}{\left(\operatorname{atanh}{\left(\sqrt{3} \right)}\right)} + 2 i \operatorname{re}{\left(\operatorname{atanh}{\left(\sqrt{3} \right)}\right)}\right)$$
=
                                               2
    2 /      /     /  ___\\     /     /  ___\\\ 
4*pi *\- I*re\atanh\\/ 3 // + im\atanh\\/ 3 /// 
------------------------------------------------
                       9                        
$$\frac{4 \pi^{2} \left(\operatorname{im}{\left(\operatorname{atanh}{\left(\sqrt{3} \right)}\right)} - i \operatorname{re}{\left(\operatorname{atanh}{\left(\sqrt{3} \right)}\right)}\right)^{2}}{9}$$
Численный ответ [src]
x1 = -70.162235930172
x2 = -80.634211442138
x3 = 11.5191730631626
x4 = -23317.9478724946
x5 = -19.8967534727354
x6 = 19.8967534727354
x7 = -95.2949771588904
x8 = 1691.22404518251
x9 = -89.0117918517108
x10 = -7.33038285837618
x11 = 99.4837673636768
x12 = -1.0471975511966
x13 = -55.5014702134197
x14 = 70.162235930172
x15 = -68.0678408277789
x16 = -36.6519142918809
x17 = -76.4454212373516
x18 = -16783.4351530279
x19 = -63.8790506229925
x20 = -99.4837673636768
x21 = -82.7286065445312
x22 = 5.23598775598299
x23 = -5.23598775598299
x24 = 68.0678408277789
x25 = -93.2005820564972
x26 = -74.3510261349584
x27 = -38345.2327321658
x28 = 26.1799387799149
x29 = 13.6135681655558
x30 = -57.5958653158129
x31 = 55.5014702134197
x32 = 86.9173967493176
x33 = 36.6519142918809
x34 = -114.144533080429
x35 = 89.0117918517108
x36 = 7.33038285837618
x37 = -30.3687289847013
x38 = -17.8023583703422
x39 = 42.9350995990605
x40 = 57.5958653158129
x41 = 32.4631240870945
x42 = -13.6135681655558
x43 = 30.3687289847013
x44 = 61.7846555205993
x45 = -11.5191730631626
x46 = -61.7846555205993
x47 = 24.0855436775217
x48 = 105.766952670856
x49 = 17.8023583703422
x50 = 76.4454212373516
x51 = 74.3510261349584
x52 = -935.147413218562
x53 = -45.0294947014537
x54 = -51.3126800086333
x55 = -49.2182849062401
x56 = 95.2949771588904
x57 = 82.7286065445312
x58 = -38.7463093942741
x59 = -24.0855436775217
x60 = 63.8790506229925
x61 = -26.1799387799149
x62 = 51.3126800086333
x63 = 80.634211442138
x64 = 38.7463093942741
x65 = -32.4631240870945
x66 = -382.227106186758
x67 = 218.864288200089
x67 = 218.864288200089
График
3cosx-2sin²x=0 уравнение