Mister Exam

Lang:

How to use it?
Equation:
Equation tan(x)=0
Equation x+3=-9x
Equation (x-2)^2+(x-3)^2=2x^2
Equation 3x^2-27=0
Express {x} in terms of y where:
17*x-18*y=10
-12*x-3*y=-9
4*x+16*y=6
-6*x-2*y=-10
Identical expressions
cos4x*cos2x=sin6x*sin8x
co sinus of e of 4x multiply by co sinus of e of 2x equally sinus of 6x multiply by sinus of 8x
cos4xcos2x=sin6xsin8x
Similar expressions
8*cos(4*x)*cos(2*x)*cos(3*x)=1
cos4xcos2xcosx=0,125

cos4xcos2x=sin6xsin8x equation

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

You have entered [src]

cos(4*x)*cos(2*x) = sin(6*x)*sin(8*x)

$$\cos{\left(2 x \right)} \cos{\left(4 x \right)} = \sin{\left(6 x \right)} \sin{\left(8 x \right)}$$

Simplify

The graph

Plot the graph f1(x)

Plot the graph f2(x)

Numerical answer [src]

x1 = 94.0906999750143

x2 = 82.0741080750334

x3 = -37.856191475757

x4 = 51.9933584169111

x5 = 99.3528676697772

x6 = 32.2013246992954

x7 = -1518.56734892897

x8 = -67.9369411338793

x9 = -27.4889357189107

x10 = 46.0243323750905

x11 = -97.7820713429823

x12 = 10.2101761241668

x13 = -41.9402619254237

x14 = -8.01106126665397

x15 = -93.7765407096553

x16 = -83.6449044018282

x17 = -87.8075146678347

x18 = -79.717913584841

x19 = 2.04203522483337

x20 = -95.9756555671682

x21 = 85.9225590756809

x22 = 19.2422550032375

x23 = -73.9845069920396

x24 = -86.0010988920206

x25 = 57.7267650097125

x26 = 35.0287580875262

x27 = -39.7411470679109

x28 = -61.7322956430394

x29 = -57.7267650097125

x30 = -3.92699081698724

x31 = -69.9004365423729

x32 = -43.8252175175776

x33 = 22.148228207808

x34 = 28.1172542496287

x35 = -30.0022098417825

x36 = 20.2632726156542

x37 = -1.72787595947439

x38 = -77.7544181763474

x39 = 24.0331837999619

x40 = 72.0995513998858

x41 = -91.8915851175014

x42 = 13.9800873084746

x43 = -55.7632696012188

x44 = -65.8163660927062

x45 = 42.2544211907827

x46 = 98.174770424681

x47 = 70.2145958077319

x48 = 76.1836218495525

x49 = -81.8384886260141

x50 = 37.3064127613788

x51 = -51.9933584169111

x52 = 50.1084028247572

x53 = -15.8650429006285

x54 = 39.6626072515711

x55 = 75.0055246044563

x56 = 27.8816348006094

x57 = 92.2057443828604

x58 = -33.7721210260903

x59 = -25.9181393921158

x60 = 55.1349510705009

x61 = 30.0022098417825

x62 = 52.2289778659303

x63 = -45.9457925587507

x64 = 6.1261056745001

x65 = 80.2676922992192

x66 = -21.8340689424491

x67 = -4.5553093477052

x68 = 65.5807466436869

x69 = -103.201318670425

x70 = -23.9546439836222

x71 = -19.9491133502952

x72 = -35.7356164345839

x73 = -64.009950316892

x74 = -99.7455667514759

x75 = 90.0066295253476

x76 = 54.1924732744239

x77 = 68.015480950219

x78 = 0.15707963267949

x79 = 12.4092909816797

x80 = -75.7909227678538

x81 = 7328.23610339623

x82 = 8.24668071567321

x83 = 4.24115008234622

x84 = 48.2234472326033

x85 = -11.7809724509617

x86 = -13.7444678594553

x87 = -53.7997741927252

x88 = 70.5287550730909

x89 = 44.1393767829366

x90 = -9.58185759344887

x91 = -17.7499984927823

x92 = -50.1084028247572

x93 = 96.2112750161874

x94 = 74.2201264410589

x95 = -71.7853921345268

x96 = 26.2322986574748

x97 = 66.1305253580651

x98 = -59.8473400508856

x99 = -47.9092879672443

x100 = -90.0066295253476

x100 = -90.0066295253476

cos4x*cos2x=sin6x*sin8x equation