Mister Exam
Other calculators
-
How to use it?
- Equation:
-
Equation 4x^2+12x+9=0
-
Equation 15-x=8
-
Equation x^2+4*x-21=0
-
Equation (x+1)^2=0
- Express {x} in terms of y where:
- 4*x+7*y=1
- -7*x+15*y=7
- 4*x-16*y=-2
- -10*x-11*y=10
- Integral of d{x}:
- |cosx|
-
Identical expressions
- cosx-2sinx=|cosx|
- co sinus of e of x minus 2 sinus of x equally module of co sinus of e of x|
-
Similar expressions
- cos(2*x)-2*cos(x)-2*sin(x)=0
- sqrt(sin(x))*(4-5*cos(x)-2*(sin(x))^2)=0
- 3*tg(x)*cos(x)-(2*sin(x)+1/sin(x))=0
- (9^sin(2*x))/(1-2sin(x))=(9^|cos(x)|)/(1-2sin(x))
- cosx+2sinx=|cosx|
- |cos(x)|=(1/2)
- -2*sin(x)*cos(x)-2*sin(x)=0
- |cos(x)|-1=ln|x|
cosx-2sinx=|cosx| equation
The teacher will be very surprised to see your correct solution 😉
The solution
You have entered
[src]
cos(x) - 2*sin(x) = |cos(x)|
$$- 2 \sin{\left(x \right)} + \cos{\left(x \right)} = \left|{\cos{\left(x \right)}}\right|$$
Numerical answer
[src]
x1 = 43.9822971502571
x2 = -43.9822971502571
x3 = 81.6814089933346
x4 = -21.2057504117311
x5 = -31.4159265358979
x6 = 41.6261026600648
x7 = -25.1327412287183
x8 = 990.387084044182
x9 = -94.2477796076938
x10 = 6.28318530717959
x11 = -52.621676947629
x12 = 79.3252145031423
x13 = 3.92699081698724
x14 = -50.2654824574367
x15 = 35.3429173528852
x16 = -75.398223686155
x17 = -46.3384916404494
x18 = 60.4756585816035
x19 = -27.4889357189107
x20 = -56.5486677646163
x21 = -2.35619449019234
x22 = 29.0597320457056
x23 = -90.3207887907066
x24 = 50.2654824574367
x25 = -69.1150383789755
x26 = -100.530964914873
x27 = 47.9092879672443
x28 = -77.7544181763474
x29 = 73.0420291959627
x30 = 56.5486677646163
x31 = -62.8318530717959
x32 = -87.9645943005142
x33 = 18.8495559215388
x34 = 54.1924732744239
x35 = 100.530964914873
x36 = -65.1880475619882
x37 = 62.8318530717959
x38 = 94.2477796076938
x39 = 66.7588438887831
x40 = -96.6039740978861
x41 = 12.5663706143592
x42 = 85.6083998103219
x43 = -71.4712328691678
x44 = -8.63937979737193
x45 = 16.4933614313464
x46 = 87.9645943005142
x47 = 98.174770424681
x48 = 69.1150383789755
x49 = -6.28318530717959
x50 = -40.0553063332699
x51 = 75.398223686155
x52 = 22.776546738526
x53 = -37.6991118430775
x54 = -12.5663706143592
x55 = -18.8495559215388
x56 = -14.9225651045515
x57 = 31.4159265358979
x58 = -81.6814089933346
x59 = -58.9048622548086
x60 = 91.8915851175014
x61 = -84.037603483527
x62 = 37.6991118430775
x63 = 25.1327412287183
x64 = -33.7721210260903
x65 = 10.2101761241668
x66 = 0.0
x66 = 0.0