Question about Kuta Software Infinite Algebra 2

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For any complex number a+bi, the absolute value is the sqrt(a^2+b^2). In your example,

a=7 and b=-1

a^2=49; b^2=1

so a^2+b^2=50

sqrt(50)=5*sqrt(2)

Posted on Jan 14, 2013

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Posted on Jan 02, 2017

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'-7.25' = 7.25

Oct 02, 2017 | The Office Equipment & Supplies

Mean absolute deviation.

Let's break it down into its components.

Mean - Average

Absolute - absolute value - sign doesn't matter - if negative, make positive

Deviation - difference from the mean

Let's do an example. Population 3 7 4 2. Total 16. Mean (Average) 16/4 = 4.

Deviations

3 - 4 = -1 absolute value 1

7 - 4 = 3

4 - 4 = 0

2 - 4 = -2 absolute value 2

Sum of these deviations 1 + 3 + 0 + 2 = 6

Mean (average) of these deviations is 6 / 4 = 1.5.

Good luck,

Paul

Let's break it down into its components.

Mean - Average

Absolute - absolute value - sign doesn't matter - if negative, make positive

Deviation - difference from the mean

Let's do an example. Population 3 7 4 2. Total 16. Mean (Average) 16/4 = 4.

Deviations

3 - 4 = -1 absolute value 1

7 - 4 = 3

4 - 4 = 0

2 - 4 = -2 absolute value 2

Sum of these deviations 1 + 3 + 0 + 2 = 6

Mean (average) of these deviations is 6 / 4 = 1.5.

Good luck,

Paul

Apr 05, 2016 | Texas Instruments TI-30Xa Scientific...

Calculate the average of these numbers (mean), then the difference between each number and the average, add the absolute value of these differences and divide by the total number of data (here 7)

Feb 04, 2016 | Office Equipment & Supplies

The quick way to determine absolute value is to square the value and take the square root of that.

So on the TI, with the value on-screen, just push these 2 keys in sequence (they are right next to each other):

So on the TI, with the value on-screen, just push these 2 keys in sequence (they are right next to each other):

Jun 04, 2015 | Texas Instruments TI-36 X Solar Calculator

Is it complex or matrix? You can have only one mode at a time.What kind of equations? The solve function uses real-valued equations.

Complex numbers: You can add, subtract, multiply and divide. You can convert a number from rectangular to polar forms and vice-versa; you can calculate the absolute value of a complex number, or a conjugate.

All the operations are done in the Mode CMPLX.

Complex numbers: You can add, subtract, multiply and divide. You can convert a number from rectangular to polar forms and vice-versa; you can calculate the absolute value of a complex number, or a conjugate.

All the operations are done in the Mode CMPLX.

Feb 04, 2014 | Casio FX991MS Scientific Calculator

Not quite true for OS 2.56 MP for the TINspire with Ti84 keyboard. To convert a complex decimal value, that you just calculated, into a fraction use the command Math [1:>Frac] and it will convert the value to complex fractions

See below.

See below.

Oct 27, 2011 | Texas Instruments TI-84 Plus Silver...

Turn calculator ON.

If you see no icons, press [MENU] key.

Use Arrows to focus on RUN and press [EXE]

Press [OPTN]

Among the TABS that appear at the bottom of screen you have CPLX.

Press [F3] to activate it.

The menu TABS that are displayed allow you manipulate complex numbers:

F1 :i imaginary unit i

F2: Abs takes the absolute value of a complex number.

F3:Arg, gives the argument (angle the complex number makes with the positive X-Axis)

F4: Conj calculates the Conjugate of a number.

F5: ReP extracts the Real part

F6:Imp extracts the Imaginary part.

For other operations use the operation keys [Plus] [MINUS] [*][/] [X^2] [Square root]. Be careful using the universal power key or the xroot key as it may lead to a Memory error.

If you see no icons, press [MENU] key.

Use Arrows to focus on RUN and press [EXE]

Press [OPTN]

Among the TABS that appear at the bottom of screen you have CPLX.

Press [F3] to activate it.

The menu TABS that are displayed allow you manipulate complex numbers:

F1 :i imaginary unit i

F2: Abs takes the absolute value of a complex number.

F3:Arg, gives the argument (angle the complex number makes with the positive X-Axis)

F4: Conj calculates the Conjugate of a number.

F5: ReP extracts the Real part

F6:Imp extracts the Imaginary part.

For other operations use the operation keys [Plus] [MINUS] [*][/] [X^2] [Square root]. Be careful using the universal power key or the xroot key as it may lead to a Memory error.

Oct 07, 2010 | Casio FX-9750GPlus Calculator

If you are looking for a key, there is none. However, you can still determine the absolute value easily.

- If you have a single number and its positive, the absolute value is the number itself.
- If you have a single number and it is negative, just drop the leading minus sign or negate it by pressing the change sign key (+ -).
- If you are handling a complicated expression just calculate it. When you obtain the final result (a number) use rule 1 or 2 above.

Aug 23, 2010 | Texas Instruments TI-30XA Calculator

hi maybe the formula below will help you

A rational number is a number that can be expressed as a fraction with an integer numerator and a non-zero natural number denominator. Fractions are written as two numbers, the numerator and the denominator, with a dividing bar between them. In the fraction written*m*⁄*n* or

*m* represents equal parts, where *n* equal parts of that size make up one whole. Two different fractions may correspond to the same rational number; for example 1⁄2 and 2⁄4 are equal, that is:

If the absolute value of*m* is greater than *n*, then the absolute value of the fraction is greater than 1. Fractions can be greater than, less than, or equal to 1 and can also be positive, negative, or zero. The set of all rational numbers includes the integers, since every integer can be written as a fraction with denominator 1. For example −7 can be written −7⁄1. The symbol for the rational numbers is **Q** (for *quotient*), also written .

A rational number is a number that can be expressed as a fraction with an integer numerator and a non-zero natural number denominator. Fractions are written as two numbers, the numerator and the denominator, with a dividing bar between them. In the fraction written

If the absolute value of

Jun 27, 2010 | Cobra 29 LTD CB Radio

Hello,

You perform all calculations in complex mode. When you need to convert to angle amplitude, in the [RUN] screen press [OPTN][F3:CMPLX]

To obtain the angle press [Arg] ( complex number) [EXE]

To obtain the magnitude, amplitude press [Abs] (complex number) [EXE].

Since the [ANS] memory keeps only the last value calculated, you may have to store your result (the complex number) in a variable.

1+ 1 i [white right arrow under tan key to store] [ALPHA] H

Display shows 1+1i. Then

[Abs] [ALPHA] H [EXE] gives 1.414213562

[Arg] [ALPHA] H [EXE] gives 45

Hope it helps.

You perform all calculations in complex mode. When you need to convert to angle amplitude, in the [RUN] screen press [OPTN][F3:CMPLX]

To obtain the angle press [Arg] ( complex number) [EXE]

To obtain the magnitude, amplitude press [Abs] (complex number) [EXE].

Since the [ANS] memory keeps only the last value calculated, you may have to store your result (the complex number) in a variable.

1+ 1 i [white right arrow under tan key to store] [ALPHA] H

Display shows 1+1i. Then

[Abs] [ALPHA] H [EXE] gives 1.414213562

[Arg] [ALPHA] H [EXE] gives 45

Hope it helps.

May 22, 2009 | Casio CFX 9850GB Plus Calculator

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