Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation 3*x^2-x-5=0
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Equation cos(x)=-3
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Equation x²-6x+5=0
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Equation (5+7*a)*15=-30
- Express {x} in terms of y where:
- -2*x+15*y=9
- -15*x-19*y=-2
- -5*x+15*y=6
- -17*x+7*y=-11
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Identical expressions
- 4lg two x+2lgx–2= zero
- 4lg2x plus 2lgx–2 equally 0
- 4lg two x plus 2lgx–2 equally zero
- 4lg2x+2lgx–2=O
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Similar expressions
- 4lg2x-2lgx–2=0
4lg2x+2lgx–2=0 equation
The teacher will be very surprised to see your correct solution 😉
The solution
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[src]
4*log(2*x) + 2*log(x) - 2 = 0
$$\left(2 \log{\left(x \right)} + 4 \log{\left(2 x \right)}\right) - 2 = 0$$
Rapid solution
[src]
3 ___ 1/3
\/ 2 *e
x1 = ----------
2
$$x_{1} = \frac{\sqrt[3]{2} e^{\frac{1}{3}}}{2}$$
x1 = 2^(1/3)*exp(1/3)/2
Sum and product of roots
[src]
sum
3 ___ 1/3
\/ 2 *e
----------
2
$$\frac{\sqrt[3]{2} e^{\frac{1}{3}}}{2}$$
=
3 ___ 1/3
\/ 2 *e
----------
2
$$\frac{\sqrt[3]{2} e^{\frac{1}{3}}}{2}$$
product
3 ___ 1/3
\/ 2 *e
----------
2
$$\frac{\sqrt[3]{2} e^{\frac{1}{3}}}{2}$$
=
3 ___ 1/3
\/ 2 *e
----------
2
$$\frac{\sqrt[3]{2} e^{\frac{1}{3}}}{2}$$
2^(1/3)*exp(1/3)/2