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42 articles trouvés pour ce sujet.
The modulus of a complex number 2016-07-29
Cheyenne pose la question :
There's a question on my Summer Assignment I cant figure out. Here it is:

Find the absolute Value of the complex number. -5i

Please help?

Penny Nom lui répond.
What is the value of |2((i)^(1/2))|? 2013-07-22
Delilah pose la question :
What is the value of |2((i)^(1/2))| ?
i.e. absolute value of 2 multiplied by square root of i.

Penny Nom lui répond.
-5<2x+1<-1 2012-11-11
Rahul pose la question :
How does -5<2x+1<-1 changes to 1<|2x+1|<5. What is the rule? Can we apply absolute value function throughout the first inequality i.e. can we say |-5|<|2x+1|<|-1|. But then it becomes 5<|2x+1|<1 which is impossible because 5 is not less than 1.
Penny Nom lui répond.
The greatest value of 5 – | x – 3| 2011-01-16
pranav pose la question :
What is the greatest value of 5 – | x – 3 | for any integral value of x. --< br /> PRANAVM
Penny Nom lui répond.
Linear inequalities with absolute values 2010-12-01
ryan pose la question :
Good day!
We we're given this assignment in algebra concerning linear inequalities with absolute value. In this number I'm confused how to isolate the absolute value, considering there is a variable in the absolute value and there is a variable in the outside.

2+5 |4-3t|+t ≤ -3-4t

Penny Nom lui répond.
|x+ 3| = |x-1| 2010-09-21
Jack pose la question :
|x+ 3| = |x-1|
Penny Nom lui répond.
Modelling the roof of a house 2010-03-23
Sandi pose la question :
This question has been haunting my dreams at night. It states the cross section of the roof of a house is modelled by the function y= -5\12|x-12|+5, where y>0 or y. Now I'm suppose to graph the function. b) Find the slope, height, length of sides, and base of the isosceles triangle. c)Explain what transformation must be applied to the graph of y=|x| to obtain the graph of y= -5\12|x-12|+5, where y>0 or y=0. 1st I put the equation into my calculator and graphed it. I got 10 for the height. We have had 2 sub teachers this past week. The first one told me the height should be 12 the other one told me 5. So I'm really confused. If I use my 10 units as height and the Pythagorean Theorem I get my sides to be 26 units the base 48 and my slope I calc to be 5/12. Both teachers are pretty sure I'm wrong and they are right but we all have different answers. Please help put this problem to rest so I can rest soundly at night. Thank you for your time.
Penny Nom lui répond.
|-3|-|-4| 2010-02-10
Nick pose la question :
I have another question. This is how i solved it and i know its suppose to be a negative.

z= |-3|-|-4|

Penny Nom lui répond.
f(x) = |3x - 6| + 1 2009-10-26
kelsey pose la question :
find the coordinates of the vertex f(x)= l3x-6l + 1
Penny Nom lui répond.
|1/(x+1)| <1 2009-05-16
Nazrul pose la question :
What is the solution of absolute value of (1/(x+1))<1? Please explain.
Stephen La Rocque lui répond.
y = |x| - 4 2009-01-28
tiana pose la question :
how do you find where to plot Y in a problem that states y=|x| -4?
Robert Dawson and Penny Nom lui répond.
Absolute value 2008-11-04
Shane pose la question :
What is the absolute value of -4
Penny Nom lui répond.
Extraneous solutions 2008-09-25
crystal pose la question :
Penny Nom lui répond.
Absolute value 2008-01-24
Cara pose la question :
Give the absolute value of this equation. {-3 + 1} - {5 - 7} note: the brackets are the absolute value lines.
Penny Nom lui répond.
sin|x| and cos|x| 2007-06-25
Mac pose la question :
Can anyone tell me whether sin|x| and cos|x| is differentiable at x=0 ? As far as i know, cos(x) and sin(x) is differentiable at all x.
Penny Nom and Stephen La Rocque lui répond.
Continuity of y = |x| 2007-05-02
moulipriya pose la question :
Is the curve y = | x | continuous everywhere?
Penny Nom lui répond.
Write the interval in absolute value notation 2007-03-20
Timothy pose la question :
1. Write interval in absolute value notation
i) xE[0,9]
ii) xE[-2,20]

Penny Nom lui répond.
The absolute value of imaginary and complex numbers 2006-12-11
Keith pose la question :
i don't get how to find the absolute value of imaginary and complex numbers here is an examples from the text book the answers are given but they don't show the work so i can follow along just show me the work please and explain how it is done


Stephen La Rocque and Penny Nom lui répond.
y = |x| - 10 2006-11-03
Pam pose la question :
what is the process for finding the vertex point for an equation such as this, y= |x| - 10.
Penny Nom lui répond.
Absolute Value vs. Standard Deviation ? 2006-04-24
Sonia pose la question :
Why we don't just take the average of the absolute value of difference scores (use the mean deviation) to describe variability instead of calculating the standard deviation?
Claude Tardif lui répond.
|ax+b| = cx + d 2005-03-22
Angel pose la question :

|ax+b| = cx + d

how to show sometimes the above has 2 roots, sometimes 1 root and sometimes no roots. Hopelessly lost on how to start...

Penny Nom lui répond.
An ineqlality with absolute values 2004-07-05
Uneeza pose la question :
abs(x2 - 4x) > 3
Claude Tardif lui répond.
|x^2 - 12x| = 8 2004-01-24
Sherre pose la question :
|x2 - 12x| = 8
Penny Nom lui répond.
Absolute value 2003-09-23
Crystal pose la question :
I am trying very hard to understand Absolute Value, and I cannot seem to grasp the idea. I do not know why we use it, what the point of it is. I do not know how to use it. I know that it is always positive or zero, and I assume it relates to distance, but how can you use it in equations. Please explain it to me as simply as possible, thank you.
Walter Whiteley lui répond.
|x+3| = -15x 2003-07-19
Nathan pose la question :
Without the use of trial and error, is there a way of solving for x where |x + 3| = -15x? I know that x = -0.1875, but how do I find whether x + 3 is positive or not if I did not have this information (In other words, how would I solve whether the x-value was -3 or less, or if it was more than -3)?
Claude Tardif and Penny Nom lui répond.
| n + 4 | + | 3 - 2n | = 16 2002-05-24
Randall pose la question :
I don't seem to be able to solve this: | n + 4 | + | 3 - 2n | = 16
Penny Nom lui répond.
Linear regression 2002-01-16
Murray pose la question :
If you have a set of coordinates (x[1],y[1]),(x[2],y[2]),...,(x[n],y[n]),find the value of m and b for which SIGMA[from 1 to m=n]AbsoluteValue(y[m]-m*x[m]-b) is at its absolute minimum.
Harley Weston lui répond.
Absolute Value 2001-10-14
Susan pose la question :
I am a homebound teacher, and my nineth grade algebra I student is having trouble understanding absolute value. Please send me an idea about how to best help her. She may be out of the classroom the entire year.
Chris Fisher lui répond.
A linear inequality 2001-09-17
Eric pose la question :
How can I solve |x + y| + |x - y|< =6?
Penny Nom lui répond.
The Mean Value Theorem 2001-07-23
Corrie pose la question :
I need to find if the mean value theorem exists. and if so, find all values c guaranteed by the theorem.

f(x) = |x2-25| on the interval [-10,0]

Harley Weston lui répond.
The domain of the derivative 2001-02-22
Wayne pose la question :
I know that the domain of f'(x) is a subset of the domain of f(x). Is it necessarily true that the subset will have at most one less element than the domain of the original function?
Harley Wesston lui répond.
The smaller of a and b 2000-09-14
Jenna pose la question :
For any two real numbers, a and b, give a mathematical expression in terms of a and b that will yield the smaller of the two numbers. Your expression should work regardless of whether a>b, a
Penny Nom lui répond.
Two geometry problems 2000-09-09
Becky pose la question :
What are all the real values of x that are solutions for the inequality [x-2] < 6? ( it's less than or equal to)

What is the distance between the points with (x,y) coordinates (3,-2) and (-3,-1)?

Peny Nom lui répond.
Solving an equation 2000-08-26
Patrick pose la question :
My question is how would u do a problem like this..........
[2x-37] =15?....u have to solve it for absolute value equations....????

Harley Weston lui répond.
PreCalculus 2000-08-09
Angela pose la question :
Use absolute values to define the interval or pair of intervals on the real line.

<--|--- |--- ]--- |--- |--- |--- [---| ---|-->    
   18  19  20  21  22  23  24  25  26    

A car is moving at the rate of 50 miles per hour, and the diameter of its wheels is 2.5 feet.
a) Find the number of revolutions per minute that the wheels are rotating.
b) Find the angular speed of the wheels in radians per minute.

Harley Weston lui répond.
Taxicab geometry 2000-01-16
Jack pose la question :
Im doing an investigation entitled 'taxicab geometry', ive attempted it and have done most of the practical part of it. But i cant seem to see the equation behind it all. please guide me in the right direction.

They provide a regular grid with regular horizontal and vertical lines. The lines are roads and the actual squares are blocks of hoouses/ buildings.

In taxicab geometry the distance between place A & B is worked out by adding together the horizontal and vertical distances. each square is counted as i unit.

Part 1 (I've done this)

A taxix cab firm is based at A. the posistion B is 7 units away from A. investigate all the posistions of B at 7 units. investigate for different distances.


Penny Nom lui répond.
Absolute value 1999-12-29
Alex Waller pose la question :
What are some practical applications for absolute value?
Harley Weston lui répond.
Inequalities and absolute values 1999-12-07
Austin Cline pose la question :
Solve for x: The absolute value of x-1 is less than or equal to the absolute value of x-2
Harley Weston lui répond.
|6-2x|<4 1999-10-20
Tchilco pose la question :
Solve |6-2x|<4
Harley Weston lui répond.
Absolute value of i 1999-01-06
Wayne Bagley pose la question :
I would like to know what is the absolute value of i. I need an answer suitable for the secondary level.
Harley Weston lui répond.
Two Questions 1997-10-28
Melissa Kelley pose la question :
I would appreciate any help you could give me.
  1. Why isn't 1 a prime number?

  2. How can the absolute value of a number be negative?

Penny Nom lui répond.
A Limit Problem 1997-09-16
Robert Reny pose la question :
what is the limit, as x approaches 0, of 3x/2x-[x]? [] means absolute value.
Harley Weston lui répond.



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