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12 - 5 i

Həqiqi hissə

12

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Qiymətləndir

12 - 5 i

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Sorğu

12 - 5 i

Videolar

Part I: Complex Variables, Lec 1: The Complex Numbers

Introduction to complex numbers | Imaginary and complex numbers | Precalculus | Khan Academy

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khanacademy.org

Əlaqəli anlayışlar

Complex number

In mathematics, a complex number is an element of a number system that extends the real numbers with a specific element denoted i, called the imaginary unit and satisfying the equation ; every complex number can be expressed in the form, where a and b are real numbers. Because no real number satisfies the above equation, i was called an imaginary number by René Descartes. For the complex number, a is called the real part, and b is called the imaginary part. The set of complex numbers is denoted by either of the symbols or C. Despite the historical nomenclature, "imaginary" complex numbers have a mathematical existence as firm as that of the real numbers, and they are fundamental tools in the scientific description of the natural world.

Imaginary number

Imaginary number

Imaginary unit

Veb Axtarışdan Oxşar Problemlər

How do you find the sum of the unit vectors

(- 9, 12, - 5)

(6, 5, - 5)

https://socratic.org/questions/how-do-you-find-the-sum-of-the-unit-vectors-9-12-5-and-6-5-5

Alan P. Jul 28, 2016

(- 9, 12, - 5)

(6, 5, - 5)

are not unit vectors; therefore this question is meaningless.

What is the distance between

(- 2, 1, 14)

(- 12, 2, - 5)

https://socratic.org/questions/what-is-the-distance-between-2-1-14-and-12-2-5

See a solution process below: Explanation: The formula for calculating the distance between two points is:

d = ((x_{2}) - (x_{1}))^{2} + ((y_{2}) - (y_{1}))^{2} + ((z_{2}) - (z_{1}))^{2}

7 i (2 - 5 i)

Opposite sign, why?

https://math.stackexchange.com/questions/1005019/7i2-5i-opposite-sign-why

7i(2-5i) = 7i*2+7i*(-5i) 7i(2) = 14i 7i * (-5i) = -35*i^2 = -35*(-1) = 35 So, the solution is 14i+35

What is the equation of the parabola that has a vertex at

(- 12, - 11)

and passes through point

(- 9, 16)

https://socratic.org/questions/what-is-the-equation-of-the-parabola-that-has-a-vertex-at-12-11-and-passes-throu

y = 3 x^{2} + 72 x + 421

the equation of a parabola in vertex form

(\overline{\underline{∣ ∣ ∣ ∣ ∣ (\frac{2}{2}) (y = a (x - h)^{2} + k) (\frac{2}{2}) ∣ ∣ ∣ ∣ ∣}})

What is the slope of any line perpendicular to the line passing through

(- 8, 2)

(- 12, - 20)

https://socratic.org/questions/what-is-the-slope-of-any-line-perpendicular-to-the-line-passing-through-8-2-and-

- \frac{2}{1 1}

Explanation: The slope of the line passing through (-8,2)and (-12.-20)is

\frac{- 2 0 - 2}{- 1 2 + 8} = - \frac{2 2}{- 4} = \frac{1 1}{2}

How to define a bijection between

(0, 1)

(0, 1]

https://math.stackexchange.com/questions/160738/how-to-define-a-bijection-between-0-1-and-0-1

Choose an infinite sequence

(x_{n})_{n ⩾ 1}

of distinct elements of

(0, 1)

X = {x_{n} ∣ n ⩾ 1}

X \subset (0, 1)

x_{0} = 1

f (x_{n}) = x_{n + 1}

n ⩾ 0

Paylaş

Panoya köçürüldü

12

12-5i ədədinin həqiqi hissəsi budur: 12.

Nümunələr

Quadratik tənlik

x^{2} - 4 x - 5 = 0

4 sin θ cos θ = 2 sin θ

y = 3 x + 4

699 * 533

[2534] [2 - 1 0135]

Eyni vaxtda tənlik

{8 x + 2 y = 46 7 x + 3 y = 47

Diferensiallaşdırma

\frac{d}{d x} \frac{( 3 x ^{2} - 2 )}{( x - 5 )}

\int_{0}^{1} x e^{- x^{2}} d x

x \to - 3 lim \frac{x ^{2} - 9}{x ^{2} + 2 x - 3}