Mister Exam

You entered:

sin(8*x-pi/3)=0

sin(8*x-pi/3)=0 equation

The teacher will be very surprised to see your correct solution 😉

v

Numerical solution:

Do search numerical solution at [, ]

The solution

You have entered [src]
   /      pi\
sin|8*x - --| = 0
\      3 /    
$$\sin{\left(8 x - \frac{\pi}{3} \right)} = 0$$
Detail solution
Given the equation
$$\sin{\left(8 x - \frac{\pi}{3} \right)} = 0$$
- this is the simplest trigonometric equation
We get:
$$\sin{\left(8 x - \frac{\pi}{3} \right)} = 0$$
Divide both parts of the equation by $-1$
The equation is transformed to
$$\cos{\left(8 x + \frac{\pi}{6} \right)} = 0$$
This equation is transformed to
$$8 x + \frac{\pi}{6} = 2 \pi n + \operatorname{acos}{\left(0 \right)}$$
$$8 x + \frac{\pi}{6} = 2 \pi n - \pi + \operatorname{acos}{\left(0 \right)}$$
Or
$$8 x + \frac{\pi}{6} = 2 \pi n + \frac{\pi}{2}$$
$$8 x + \frac{\pi}{6} = 2 \pi n - \frac{\pi}{2}$$
, where n - is a integer
Move
$$\frac{\pi}{6}$$
to right part of the equation with the opposite sign, in total:
$$8 x = 2 \pi n + \frac{\pi}{3}$$
$$8 x = 2 \pi n - \frac{2 \pi}{3}$$
Divide both parts of the equation by
$$8$$
$$x_{1} = \frac{\pi n}{4} + \frac{\pi}{24}$$
$$x_{2} = \frac{\pi n}{4} - \frac{\pi}{12}$$
The graph
Rapid solution [src]
      pi
x_1 = --
24
$$x_{1} = \frac{\pi}{24}$$
      pi
x_2 = --
6 
$$x_{2} = \frac{\pi}{6}$$
Sum and product of roots [src]
sum
pi   pi
-- + --
24   6 
$$\left(\frac{\pi}{24}\right) + \left(\frac{\pi}{6}\right)$$
=
5*pi
----
24 
$$\frac{5 \pi}{24}$$
product
pi   pi
-- * --
24   6 
$$\left(\frac{\pi}{24}\right) * \left(\frac{\pi}{6}\right)$$
=
  2
pi
---
144
$$\frac{\pi^{2}}{144}$$
x1 = 22.1220482690281
x2 = 68.0678408277789
x3 = -61.9155552144988
x4 = -9.29387826686981
x5 = 50.0036830696375
x6 = -69.7695368484733
x7 = -39.9244066393703
x8 = -71.733032256967
x9 = 38.2227106186758
x10 = 92.022484811401
x11 = -47.7783882733448
x12 = -79.9797129726402
x13 = -511.556003759538
x14 = 93.9859802198946
x15 = -81.9432083811338
x16 = 88.0954939944138
x17 = 60.2138591938044
x18 = -21.860248881229
x19 = -85.870199198121
x20 = -5.75958653158129
x21 = -25.7872396982162
x22 = -45.8148928648512
x23 = 7.98488132787406
x24 = 18.1950574520409
x25 = 42.1497014356631
x26 = 26.0490390860154
x27 = 44.1131968441567
x28 = 51.9671784781312
x29 = 58.2503637853107
x30 = -35.997415822383
x31 = -57.9885643975116
x32 = 80.2415123604393
x33 = -97.6511716490827
x34 = 95.9494756283883
x35 = 6.02138591938044
x36 = -41.8879020478639
x37 = 48.0401876611439
x38 = -100.007366139275
x39 = 84.1685031774265
x40 = 46.8620904160477
x41 = 86.1319985859202
x42 = 36.2592152101822
x43 = -67.8060414399797
x44 = 16.2315620435473
x45 = -49.7418836818384
x46 = -23.8237442897226
x47 = -73.3038285837618
x48 = -51.705379090332
x49 = -15.9697626557481
x50 = -43.8513974563575
x51 = -7.72308194007491
x52 = -14.0062672472545
x53 = -63.8790506229925
x54 = -93.7241808320955
x55 = -83.9067037896274
x56 = -19.8967534727354
x57 = -34.0339204138894
x58 = 20.1585528605345
x59 = -59.9520598060052
x60 = -78.0162175641465
x61 = -65.8425460314861
x62 = -12.0427718387609
x63 = 90.0589894029074
x64 = 70.0313362362725
x65 = -17.9332580642417
x66 = -91.7606854236019
x67 = 24.0855436775217
x68 = -98.0438707307815
x69 = 78.2780169519457
x70 = -56.025068989018
x71 = -3.79609112308767
x72 = 40.1862060271694
x73 = 66.1043454192852
x74 = 71.9948316447661
x75 = 4.05789051088682
x76 = -27.7507351067098
x77 = 34.2957198016886
x78 = -217.424391567194
x79 = -37.9609112308767
x80 = -87.8336946066146
x81 = 82.2050077689329
x82 = 2.0943951023932
x83 = -1.83259571459405
x84 = -89.7971900151083
x85 = 29.9760299030026
x86 = 62.177354602298
x87 = -54.4542726622231
x88 = 73.9583270532597
x89 = -76.4454212373516
x90 = 56.2868683768171
x91 = 14.2680666350536
x92 = -29.7142305152035
x93 = 64.1408500107916
x94 = 0.130899693899575
x95 = 46.0766922526503
x96 = 100.269165527074
x97 = 28.012534494509
x97 = 28.012534494509
The graph