Mister Exam

Lang:

How to use it?
Equation:
Equation 15-x=8
Equation x^2+3*x+9=0
Equation x^2-16*x+64=0
Equation x^2-6x-7=0
Express {x} in terms of y where:
9*x-8*y=-6
-11*x+1*y=-14
-13*x-14*y=0
7*x-17*y=2
Identical expressions
- two *pi*sin(pi*x)=(pi*cos(pi*(x/ two)))/ two
minus 2 multiply by Pi multiply by sinus of ( Pi multiply by x) equally ( Pi multiply by co sinus of e of ( Pi multiply by (x divide by 2))) divide by 2
minus two multiply by Pi multiply by sinus of ( Pi multiply by x) equally ( Pi multiply by co sinus of e of ( Pi multiply by (x divide by two))) divide by two
-2pisin(pix)=(picos(pi(x/2)))/2
-2pisinpix=picospix/2/2
-2*pi*sin(pi*x)=(pi*cos(pi*(x divide by 2))) divide by 2
Similar expressions
2*pi*sin(pi*x)=(pi*cos(pi*(x/2)))/2

-2pisin(pix)=(picos(pi*(x/2)))/2 equation

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

You have entered [src]

                        /   x\
                  pi*cos|pi*-|
                        \   2/
-2*pi*sin(pi*x) = ------------
                       2

$$- 2 \pi \sin{\left(\pi x \right)} = \frac{\pi \cos{\left(\pi \frac{x}{2} \right)}}{2}$$

Simplify

The graph

Plot the graph f1(x)

Plot the graph f2(x)

Numerical answer [src]

x1 = -9.92021382465046

x2 = -68.0797861753495

x3 = 47.9202138246505

x4 = 71.9202138246505

x5 = -89.9202138246505

x6 = -76.0797861753495

x7 = 74.0797861753495

x8 = 10.0797861753495

x9 = -13.9202138246505

x10 = 18.0797861753495

x11 = 14.0797861753495

x12 = -100.07978617535

x13 = -85.9202138246505

x14 = 78.0797861753495

x15 = 51.9202138246505

x16 = -20.0797861753495

x17 = -25.9202138246505

x18 = -16.0797861753495

x19 = 79.9202138246505

x20 = 23.9202138246505

x21 = -64.0797861753495

x22 = 11.9202138246505

x23 = -77.9202138246505

x24 = 3.92021382465046

x25 = 59.9202138246505

x26 = 6.07978617534954

x27 = -72.0797861753495

x28 = 91.9202138246505

x29 = 95.9202138246505

x30 = 55.9202138246505

x31 = -17.9202138246505

x32 = -5.92021382465046

x33 = -61.9202138246505

x34 = 70.0797861753495

x35 = -36.0797861753495

x36 = -45.9202138246505

x37 = 19.9202138246505

x38 = 54.0797861753495

x39 = -96.0797861753495

x40 = -8.07978617534954

x41 = -80.0797861753495

x42 = -88.0797861753495

x43 = 22.0797861753495

x44 = 50.0797861753495

x45 = -92.0797861753495

x46 = -52.0797861753495

x47 = -21.9202138246505

x48 = 99.9202138246505

x49 = -53.9202138246505

x50 = 67.9202138246505

x51 = -24.0797861753495

x52 = -65.9202138246505

x53 = 62.0797861753495

x54 = -97.9202138246505

x55 = 27.9202138246505

x56 = -32.0797861753495

x57 = 34.0797861753495

x58 = 15.9202138246505

x59 = -29.9202138246505

x60 = -33.9202138246505

x61 = -12.0797861753495

x62 = 86.0797861753495

x63 = -73.9202138246505

x64 = 75.9202138246505

x65 = 30.0797861753495

x66 = 42.0797861753495

x67 = -60.0797861753495

x68 = -56.0797861753495

x69 = 7.92021382465046

x70 = -37.9202138246505

x71 = 82.0797861753495

x72 = 66.0797861753495

x73 = 38.0797861753495

x74 = 39.9202138246505

x75 = 98.0797861753495

x76 = 58.0797861753495

x77 = -41.9202138246505

x78 = -44.0797861753495

x79 = -28.0797861753495

x80 = -40.0797861753495

x81 = 83.9202138246505

x82 = -1.92021382465046

x83 = -49.9202138246505

x84 = -81.9202138246505

x85 = 31.9202138246505

x86 = -48.0797861753495

x87 = -93.9202138246505

x88 = -4.07978617534954

x89 = 2.07978617534954

x90 = 87.9202138246505

x91 = -84.0797861753495

x92 = 46.0797861753495

x93 = 63.9202138246505

x94 = 90.0797861753495

x95 = 94.0797861753495

x96 = 43.9202138246505

x97 = 35.9202138246505

x98 = -57.9202138246505

x99 = -0.0797861753495365

x100 = -69.9202138246505

x101 = 26.0797861753495

x101 = 26.0797861753495

-2*pi*sin(pi*x)=(pi*cos(pi*(x/2)))/2 equation