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by FWT
Tue Sep 29, 2015 1:26 pm
Forum: Uncategorized
Topic: Question
Replies: 4
Views: 63

Re: Question

Alfred wrote:What does this mean: >i

It probably depends on the context. Where did you see this?
by FWT
Mon Sep 14, 2015 11:11 am
Forum: Intermediate Algebra
Topic: Linear Programming quiz questions
Replies: 2
Views: 139

Re: Linear Programming quiz questions

E. What is the maximum number of extreme points of a feasible region with only one constraint excluding the nonnegativity constraint? My solution: I said that the maximum number of extreme points will not exist because if there is no nonnegativity constraint there is no x and y axes. When they say ...
by FWT
Thu Aug 06, 2015 3:51 pm
Forum: Uncategorized
Topic: making cubes
Replies: 7
Views: 382

Re: making cubes

Added information: If a cube can be obtained by rotating another cube, these two cubes are NOT considered to be different. So the other reply was right about what to assume. Thanks for that. My 27 is wrong. How do you know? What was your reasoning? My reasoning would start by doing one half (or &qu...
by FWT
Sun Jul 05, 2015 5:10 pm
Forum: Trigonometry
Topic: Trigonometry functions help
Replies: 1
Views: 178

Re: Trigonometry functions help

Hey guys... i need help with the following functions.. Do you maybe mean "with solving the following equation over the following interval"? 3 tan 2x + sin 2x = 0 between 0 and 180 What I got is: sin 2x (3 - cos 2x) = 0 How did you get this? It doesn't have the same solution or graph: http...
by FWT
Mon May 25, 2015 4:52 pm
Forum: Calculus
Topic: Differatiation: normal to y=2x/(x^2+1) at a point (3;0,6)
Replies: 1
Views: 404

Re: Differatiation: normal to y=2x/(x^2+1) at a point (3;0,6)

find the equation of the normal line to the curve y=2x/(x^2+1) at a point (3;0,6) and also that of the tangent. Calculus: What did you get for the derivative of y? Algebra: What did you get when you plugged x = 3 into the derivative? So what is the slope at x = 3? Using this slope and the point the...
by FWT
Fri May 22, 2015 10:55 am
Forum: Intermediate Algebra
Topic: Substituting a Zero into a negative variable
Replies: 8
Views: 582

Re: Substituting a Zero into a negative variable

TepNosreProgger wrote:its not from thier post,
after referencing nona.m.nona 's post i plugged in the equation i'm trying to solve
TepNosreProgger wrote:so i'm trying to substitute this (1x^2 + 0x + 1 = 0) into the quadratic formula

How did you get b^2 - 4ac = -16 from a = 1, b = 0, and c = 1?
by FWT
Sat May 02, 2015 8:26 pm
Forum: Advanced Algebra ("pre-calculus")
Topic: Complex Numbers Exponential Form
Replies: 1
Views: 443

Re: Complex Numbers Exponential Form

Coverct to rectanguala a+bi z = e^(3-i pi/2) Exponential form (starting about 2/3 of the way down here ) looks like: . . . z\, =\, r\, e^{i\theta} Use rules of exponents to convert your right-hand side expression into the normal format: . . . e^{3\, -\, \frac{i\,\pi}{2}} \, =\, e^3\, e^{-\frac{i\,\...
by FWT
Thu Apr 16, 2015 5:07 pm
Forum: Geometry
Topic: find the area of a square inscribed in a circle
Replies: 1
Views: 5660

Re: find the area of a square inscribed in a circle

find the area of a square if it is inscribed in a circle in which one arc intercepted by a side of the square has length 12pi. Draw the square. Draw the circle inside. Draw horizontal and vertical lines through the center that split the square into four equal smaller squares. Label one of the small...
by FWT
Tue Mar 17, 2015 1:18 pm
Forum: Intermediate Algebra
Topic: Keep getting wrong answer
Replies: 1
Views: 715

Re: Keep getting wrong answer

I get the wrong answer for 5 = 1/3(-2 + b) The way it's written means 5 = 1/[3(-2 + b)]. But I think you mean 5 = (1/3)(-2 + b). Is this right? I get b = 17 for the answer. But the book works it and comes up with an answer b = 17/3 You can check the answers by plugging them back into the original e...
by FWT
Tue Mar 17, 2015 1:14 pm
Forum: Geometry
Topic: area of a triangle
Replies: 1
Views: 5596

Re: area of a triangle

Hi, I am have trouble with this problem. Find the area of triangle with angles 45-15-120. The side across from the 120 degree angle is 10. I need to solve without Trig. Similar problems have found 30-60-90 or 45-45-90 triangles in problem and used them to find the solution. But I am stumped....Ed H...

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