# Activity Stream

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• 12-07-2018, 09:05 PM
Hi, I am told to solve the quadratic equation given below after plotting the function above it. 1 - x - x2 = y 2x2 - 4x + 1 = 0 But i'm...
24 replies | 596 view(s)
• 12-04-2018, 12:26 PM
I am trying to find an efficient way of solving cosxcos4xcos8x=1/8, 0 to 2pi, i am thinking about the product of three trig expressions and what...
20 replies | 678 view(s)
• 12-03-2018, 08:21 PM
I have the following details: Q1 a) Calculate the original loan amount using the following details: Using the PV function in excel, I get...
19 replies | 317 view(s)
• 12-05-2018, 08:50 PM
Hi, Suppose people randomly pick a number between 0 and 1. What would be the expected number of people you would have to ask for numbers if you want...
13 replies | 590 view(s)
• 12-06-2018, 05:33 AM
In nice and green valley there is a building with 4 floors. In every floor there is a quadrilateral polygons, that is have a unique property. Which...
13 replies | 535 view(s)
• 12-08-2018, 02:32 AM
Why study those reciprocals? or even the basic trig ratios? I won't use them in cooking, buying coke in 7/11, or even when I go to the bathroom. Is...
13 replies | 70 view(s)
• 12-05-2018, 07:14 PM
Hello all I have another log problem which I was hoping someone could help me with. I have the following:- logY^3 = logx(x+4)^2 I have...
10 replies | 542 view(s)
• 12-06-2018, 06:11 PM
So I'm trying to understand how to integrate: (dx/(sqrt(-4x - x^2))) without using trig substitution as I'm in a Calc 1 class and we're not supposed...
13 replies | 375 view(s)
• Yesterday, 12:13 PM
Working with my 9 year old son on multiplying and dividing fractions. Without any understanding but playing with a calculator he worked out that...
12 replies | 193 view(s)
• 12-07-2018, 01:36 PM
Hello to everyone. I need help with this problem. For a random variable X that follows a normal distribution with an unknown mean μ, variance of 2...
10 replies | 341 view(s)
• 12-04-2018, 11:29 PM
Hi, I am having a little bit of confusion with this two-column proof. I tried my very best to prove the two triangles are similar and I don't know...
8 replies | 448 view(s)
• 12-03-2018, 08:56 PM
hi guys can someone answer this: write the equation perpendicular to y=-2/3x-8/9 and which passes through (6,-9)
7 replies | 247 view(s)
• 12-06-2018, 09:08 PM
Question in attached picture. Thanks for the help, kinda forgot the simple rules of splitting integrals. All that came to mind was no dx attached...
7 replies | 313 view(s)
• 12-08-2018, 08:45 PM
Here is the problem: Here is my solution and my solution checking: I tried this problem various times and always got the same answer....
10 replies | 165 view(s)
• 12-04-2018, 10:25 AM
Hi, Can someone help me with a formel for this problem //ML
7 replies | 365 view(s)
• 12-07-2018, 03:36 PM
So I have this problem f(x)=x^3+x+1 and I need to find the inverse of this function.I know that you have to use differentiation but the problem is I...
7 replies | 226 view(s)
• 12-08-2018, 03:07 AM
Otis started a thread Cryptic Outlook in Math Odds & Ends
Clear display (4)
9 replies | 221 view(s)
• 12-03-2018, 10:47 PM
Locus started a thread Locus problem in Geometry and Trig
Hi everyone. New guy here, been stuck with a locus problem since two days ago, so out of despair i will post it here. a=(5,-3), b=(1,4). Find the...
8 replies | 266 view(s)
• 12-06-2018, 06:04 PM
So I'm trying to integrate the indefinite integral of (2x/(x^2 + 6x + 13)) and I get to an answer that I know doesn't work but I'm only off but a...
7 replies | 295 view(s)
• 12-07-2018, 12:42 PM
The question is: "Find 3 properties of this sequence:" I find that all the number in this sequence is odd. (1) What other properties this...
7 replies | 246 view(s)
• Yesterday, 09:04 AM
Hi all Can anyone help me with the solution of those 2 problems for my final exam revision 1) A loan of \$8,000 is to be repaid with quarterly...
8 replies | 132 view(s)
• Yesterday, 06:08 AM
Three roommates share household supplies and split the costs. Each buys items and adds the items to the ledger. At the end of the month they...
6 replies | 102 view(s)
• Yesterday, 01:39 PM
Actually I start my work day with a shot of Jack Daniels and coke (only Joking). Fine, the start of the day starts off with 4 songs and then a...
7 replies | 59 view(s)
• 12-04-2018, 07:14 AM
How do you know which to use when factoring and what is the difference?
4 replies | 359 view(s)
• 12-08-2018, 03:11 AM
Hello every one Is it correct to use Richard Feynman's Integral Trick instead of integration by parts to find the integral below: Thanks
6 replies | 228 view(s)
• 12-03-2018, 08:58 PM
Hello! Our math teacher gave us a surprise test a few days ago. There was one question on it that I haven't been able to answer and it is...
7 replies | 186 view(s)
• 12-03-2018, 09:07 PM
This simple problem is from a series of review problems: Here is the book's solution: Here is what I did: Question 1) Where did the...
5 replies | 304 view(s)
• 12-07-2018, 07:28 AM
Question: The Bondy family wishes to set up a scholarship fund. They would like to see 2000/year awarded over a 20 year period. It is expected that...
5 replies | 205 view(s)
• Yesterday, 12:08 PM
Hi there, This is my second post on this forum, I'm self studying Algebra from a book called: Teach Yourself Algebra: A Complete Introduction....
4 replies | 104 view(s)
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