Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation 3x-1=2x
-
Equation (x+3)^3=81*(x+3)
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Equation 2*x^2-3*x+5=0
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Equation asin(-1)-2=x
- Express {x} in terms of y where:
- 14*x+9*y=2
- -1*x+8*y=-11
- -9*x+19*y=-17
- 14*x-16*y=-20
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Identical expressions
- asin(- one)- two =x
- arc sinus of e of ( minus 1) minus 2 equally x
- arc sinus of e of ( minus one) minus two equally x
- asin-1-2=x
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Similar expressions
- asin(-1)+2=x
- asin(1)-2=x
- arcsin(-1)-2=x
asin(-1)-2=x equation
The teacher will be very surprised to see your correct solution 😉
The solution
Detail solution
Given the linear equation:
Expand brackets in the left part
Looking for similar summands in the left part:
Move free summands (without x)
from left part to right part, we given:
$$- \frac{\pi}{2} = x + 2$$
Move the summands with the unknown x
from the right part to the left part:
$$- x - \frac{\pi}{2} = 2$$
Divide both parts of the equation by (-x - pi/2)/x
We get the answer: x = -2 - pi/2
asin(-1)-2 = x
Expand brackets in the left part
asin-1-2 = x
Looking for similar summands in the left part:
-2 - pi/2 = x
Move free summands (without x)
from left part to right part, we given:
$$- \frac{\pi}{2} = x + 2$$
Move the summands with the unknown x
from the right part to the left part:
$$- x - \frac{\pi}{2} = 2$$
Divide both parts of the equation by (-x - pi/2)/x
x = 2 / ((-x - pi/2)/x)
We get the answer: x = -2 - pi/2
Sum and product of roots
[src]
sum
pi
-2 - --
2
$$-2 - \frac{\pi}{2}$$
=
pi
-2 - --
2
$$-2 - \frac{\pi}{2}$$
product
pi
-2 - --
2
$$-2 - \frac{\pi}{2}$$
=
pi
-2 - --
2
$$-2 - \frac{\pi}{2}$$
-2 - pi/2
The graph