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23 articles trouvés pour ce sujet.
Points on the x-axis 2015-03-14
Justin pose la question :
jamie tells her friend that ordered pairs that have an x-coordinate of O line x-axis. She used the origin as an example. Describe Janine error. Use a counterexample to explain why Janine statement is false
Penny Nom lui répond.
A region described by inequalities in cylindrical coordinates 2015-02-21
Rahul pose la question :
I am not able to visualize a solid given by inequalities as under (in cylindrical coordinate system) 0= I know that (can visualize) first 2 inequalities say it is a cylinder of infinite length. It seems that third inequality poses the restriction to the height as well as it makes us to remove a cone.
But I just can not understand it clearly.
Thanks in advance!

Penny Nom lui répond.
r=10cos(t) in cylindrical coordinates 2013-05-18
r.m pose la question :
question from calculus exam: what is the figure obtained having eqn.r=10cos(t) in cylinderical coordinates? i know it is a cylinder with center (5,0) ,but can't the equation represent two cylinders ,one with center (5,0) and the other with center (-5,0). thanks for any help.
Penny Nom lui répond.
Polar coordinates 2010-04-14
Lan pose la question :
Given the rectangular equation (x^2)+2x+(y^2)+y=0, find the polar equation.
Harley Weston lui répond.
Integration of cos (x^2+y^2) dx dy 2010-02-12
anna pose la question :
How do you evaluate the integration of integration of cos (x^2+y^2) dx dy?
Tyler Wood lui répond.
The line through D(-4, 0) and E(2, 6) 2009-11-16
Rogerson pose la question :
The point F is on the line through D(-4, 0) and E(2, 6) so that DF=4DE. Find the coordinates of F.
Penny Nom lui répond.
A side of a rectangle 2009-07-15
hanbal pose la question :
Could please help solving this problem

A(1,3) and D(5,5) are two vertices of a rectangle ABCD. The equation of line AC is 3y=4x + 5
a) the equation of line DC

Chris Fisher lui répond.
Subdividing a four-sided lot 2009-03-27
kannan pose la question :
i have a 1.5 acre land having four sides
A-B=64.8 meters
B-C=94.2 meters
C-D=54.4 meters
D-A=127.2 meters
angle at D is 90
the side AB (frontage)is road facing i want to split the plot in to two halves having same almost area and almost equal frontage, kindly help me, if possible explain with drawing.


Harley Weston lui répond.
Cutting a pipe at an arbitrary angle 2008-09-20
John pose la question :
from the original question Al asked about cutting a 200 diameter pipe in 45 degrees. can someone explain the math steps required to creating the graph. I am trying to do the same thing only using a 150 degree cut.
Harley Weston lui répond.
A regular hexagon 2008-05-20
Martin pose la question :
Given a regular hexagon with center on the origin of an x-y plane with coordinate (r,0) on the x axis, we are to express the coordinates of "A" located at 120 deg from (r,0) in terms of "r".
Janice Cotcher lui répond.
Three points on the circumference of a circle 2007-07-30
Bharathi pose la question :
given a circle with radius r and a point x,y on its circumference,output two other points x1,y1 and x2,y2 on the circle so thar all 3 points form a equilateral triangle.
Stephen La Rocque lui répond.
What is the equation? 2006-09-13
A parent pose la question :
Penny Nom lui répond.
Plotting co-ordinates on a number plane 2006-09-08
Victor pose la question :
I need to plot co-ordinates (0,2), (2,-2), (-2,0), and (0,0) on a number or co-ordinates plane, I am not sure how to do this, and get lost after the first point, can you please help?
Penny Nom lui répond.
Polar to Cartesian coordinates 2006-01-15
Linden pose la question :
How do you convert six units at 30 degrees Polar Coordinate into a Cartesian Coordinate?
Penny Nom lui répond.
Converting coordinates 2004-10-25
Allen pose la question :
I am trying to help my son with his home, but I don't remember these conversions. Please help.

1. Convert the following coordinates Cartesian x = 7, y = -24

2. Convert the following coordinates Polar r = 4, theta = pi / 3

Penny Nom lui répond.
A triangle in the complex plane 2003-07-10
Scott pose la question :
The vertices O and A of an EQUILATERAL triangle OAB in the complex plane are located at the origin and 3 + 3i. Find all possible values for the complex number representing the vertex B. Give the location of B in both polar and cartesian form (to 2.d.p)
Penny Nom lui répond.
Transformations of pattern blocks 2003-02-06
Cheryl pose la question :
I am trying to help my 8th grade son with Transformations - use of patttern blocks. He has to trace a figure and reflect it across the x-axis, which I can do, but then it indicates include ordered pairs - that confuses me.
Penny Nom lui répond.
Polar coordinates 2000-02-24
Tran Trung pose la question :
How do I convert r = 2/(2sin(theta) - 3cos(theta)) to rectangular and x2 + y2 -2y = 0 to polar form?
Harley Weston lui répond.
A valentines project 2000-02-21
Courtney Dohoney pose la question :
I was assigned a valentines project. Our job is to make a valentines card that has a math theme. On my valentines card I would like to include the set of equations that when graphed look like a heart. If you can figure out a set of equations and get it back to me I would be very happy.
Harley Weston lui répond.
A Polar Plot 1999-05-06
Irene pose la question :
Consider the polar equation r=2-3Cos(theta/2) In the interval [o, 4Pi], how would you find the area of one of the leaves and also the length of one of the edges of a leaf?
Harley Weston lui répond.
Complex numbers/polar coordinates 1999-03-25
Kate Cegelis pose la question :
What is the relationship between complex numbers and polar coordinates?
Harley Weston lui répond.
Calculating the Intersection Point. 1997-12-10
Milton Parsons pose la question :
Given 2 lines through (x1,y1),(x2,y2),and (x3,y3),(x4,y4). Can you give me a good formula for calculating the intersection point. I would greatly appreciate it.Thanks.
Chris Fisher and Penny Nom lui répond.
A Geometry Problem 1997-09-18
Rebecca Henry pose la question :
A circle is centered at the vertex of the right angle of an isosceles triangle. The cirlce passes through both trisection points of the hypotenuse of the triangle. If the length of a radius of the circle is 10, find the area of the triangle.
Chris Fisher Harley Weston lui répond.



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