Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation x/4+x=4
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Equation x^2+11=0
- Equation x+y=5
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Equation 1*(x-1)*(x-3)=0
- Express {x} in terms of y where:
- -11*x-3*y=14
- -1*x-17*y=-12
- 20*x+18*y=-9
- -2*x+20*y=-2
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Identical expressions
- arccos(one / two +cos(pi*(-x^ two + two *x+ two)/(x^ two + four *x+ seven)))=(two *Pi)/ three
- arc co sinus of e of (1 divide by 2 plus co sinus of e of ( Pi multiply by ( minus x squared plus 2 multiply by x plus 2) divide by (x squared plus 4 multiply by x plus 7))) equally (2 multiply by Pi) divide by 3
- arc co sinus of e of (one divide by two plus co sinus of e of ( Pi multiply by ( minus x to the power of two plus two multiply by x plus two) divide by (x to the power of two plus four multiply by x plus seven))) equally (two multiply by Pi) divide by three
- arccos(1/2+cos(pi*(-x2+2*x+2)/(x2+4*x+7)))=(2*Pi)/3
- arccos1/2+cospi*-x2+2*x+2/x2+4*x+7=2*Pi/3
- arccos(1/2+cos(pi*(-x²+2*x+2)/(x²+4*x+7)))=(2*Pi)/3
- arccos(1/2+cos(pi*(-x to the power of 2+2*x+2)/(x to the power of 2+4*x+7)))=(2*Pi)/3
- arccos(1/2+cos(pi(-x^2+2x+2)/(x^2+4x+7)))=(2Pi)/3
- arccos(1/2+cos(pi(-x2+2x+2)/(x2+4x+7)))=(2Pi)/3
- arccos1/2+cospi-x2+2x+2/x2+4x+7=2Pi/3
- arccos1/2+cospi-x^2+2x+2/x^2+4x+7=2Pi/3
- arccos(1 divide by 2+cos(pi*(-x^2+2*x+2) divide by (x^2+4*x+7)))=(2*Pi) divide by 3
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Similar expressions
- arccos(1/2+cos(pi*(-x^2+2*x-2)/(x^2+4*x+7)))=(2*Pi)/3
- arccos(1/2+cos(pi*(-x^2+2*x+2)/(x^2-4*x+7)))=(2*Pi)/3
- arccos(1/2+cos(pi*(x^2+2*x+2)/(x^2+4*x+7)))=(2*Pi)/3
- arccos(1/2-cos(pi*(-x^2+2*x+2)/(x^2+4*x+7)))=(2*Pi)/3
- arccos(1/2+cos(pi*(-x^2+2*x+2)/(x^2+4*x-7)))=(2*Pi)/3
- arccos(1/2+cos(pi*(-x^2-2*x+2)/(x^2+4*x+7)))=(2*Pi)/3
arccos(1/2+cos(pi*(-x^2+2*x+2)/(x^2+4*x+7)))=(2*Pi)/3 equation
The teacher will be very surprised to see your correct solution 😉
The solution
You have entered
[src]
/ / / 2 \\\
|1 |pi*\- x + 2*x + 2/|| 2*pi
acos|- + cos|-------------------|| = ----
|2 | 2 || 3
\ \ x + 4*x + 7 //
$$\operatorname{acos}{\left(\cos{\left(\frac{\pi \left(\left(- x^{2} + 2 x\right) + 2\right)}{\left(x^{2} + 4 x\right) + 7} \right)} + \frac{1}{2} \right)} = \frac{2 \pi}{3}$$
Numerical answer
[src]
x1 = -0.5 - 1.5*i
x2 = -0.5 + 1.5*i
x3 = -0.5 + 1.5*i
x4 = -0.5 - 1.5*i
x4 = -0.5 - 1.5*i