# Activity Stream

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• 10-22-2018, 09:29 AM
Let P be a point in the intersection of the curves x^2-y^2=c and xy=d, where c and d are constants. Show that the tangents to the curve at P are...
19 replies | 895 view(s)
• 10-31-2018, 01:19 AM
I don't understand it. I have the answer, but I don't get it. Could someone please explain ? Write an equation for a line perpendicular to...
21 replies | 766 view(s)
• 11-08-2018, 05:26 PM
It's confusing me since there are two logs. (log4x-log4). If it was for example "log3(9x+4)=5, x =" then I'd know what to do. How different us it?...
20 replies | 623 view(s)
• 10-27-2018, 01:08 PM
Denis started a thread Corner Talk in Math Odds & Ends
What's that | at the end Halls?
17 replies | 706 view(s)
• 11-12-2018, 08:49 AM
I don't understand how to start. Also, I'm experiencing a problem in general when doing calc where it makes sense when someone explains an issue for...
17 replies | 419 view(s)
• 11-07-2018, 11:24 AM
Hi there - My calculus prof gave us an assignment that has the whole class stumped. He specifically said that this assignment does not require...
13 replies | 613 view(s)
• Yesterday, 03:13 PM
Okay, I'm having the same problem on MHF. Instead of equations here all I am seeing is a bunch of icons from CodeCogs images saying "equation quota...
18 replies | 271 view(s)
• 10-27-2018, 07:38 PM
Here is one of the choices in a multiple choice problem whose question is: Which of the following is true? This is choice C: . . . . .\mbox{C. }\,...
12 replies | 848 view(s)
• 11-08-2018, 02:05 PM
Usually pretty good at math, but I keep getting stumped and getting a variable equals a variable. Problem: 2=(ab+c)/a Solve for a. Been...
12 replies | 517 view(s)
• 10-18-2018, 03:39 PM
hello friends, i have this assignment in induction i can not solve, if someone could give me a hand i will be very grateful. prove that- ∀n∈ℕ...
12 replies | 529 view(s)
• 11-14-2018, 05:54 PM
And what if Chris de Burgh did pay the ferryman before he got him to the other side?
16 replies | 258 view(s)
• Yesterday, 04:44 PM
Denis started a thread 2 rebus puzzles in Math Odds & Ends
t.a.b.l.e. (2 words) ballo_ (2 words)
16 replies | 169 view(s)
• 11-09-2018, 07:42 PM
I'm stuck on a problem, any help is appreciated. I know the derivative is 7-2sinx and I know the equation is (f^-1)'(x)=1/f'(f^-1(x)), just confused...
14 replies | 458 view(s)
• 11-12-2018, 03:31 PM
Denis started a thread Movie crypt in Math Odds & Ends
Undercover cop in **** movie treat. (7) sorry, no e's! **** = po rn (this site is too da mn catholic!!)
14 replies | 306 view(s)
• 10-18-2018, 10:11 AM
Can anyone offer me hints or check the answer i have got? I got sqrt(45) using a mixture of theorem involving semi-circles and similar triangles....
11 replies | 400 view(s)
• 10-24-2018, 02:14 PM
Consider a loot crate, at the top of a frictionless ramp. If the mass of the loot crate is 11.5kg and the ramp has a rise of 3m and a run of 4m, then...
11 replies | 685 view(s)
• 10-30-2018, 09:54 PM
The universe is expanding at 68k meters/second for every 1,000,000 lightyears from the focus. The math problem is to find the maximum initial...
11 replies | 407 view(s)
• 11-04-2018, 01:33 PM
a dry cleaner gives 4 identical shirts randomly to 4 people, where each person owns one shirt. what is the probability of at least one person getting...
12 replies | 334 view(s)
• 11-12-2018, 03:41 PM
Someone told me to take derivative on both sides to get s(x) but I do not know how to do it. I figured out 1/x+2/x^2+3/x^3+4/x^4+...=x/(x-1)^2,...
10 replies | 332 view(s)
• 10-23-2018, 07:39 PM
Here is the problem: Here is what I did with it: My solution: 1/(2(x+3)) Book solution: Where the **** do they get that denominator?
9 replies | 400 view(s)
• 10-22-2018, 02:21 PM
Dealer A offers a rug for $450, less 33 &1/3% and 20%. Dealer B offers a rug of equal value for$500, less 30%, 20%, and 10%. Which is the better...
8 replies | 577 view(s)
• 10-24-2018, 05:38 PM
Hello everybody I tried but still can't solve this integral: Integral from 0 to t of the expression f(t-x)*F(x)dx While f(t)=0.01 And F(t)=0.01*t...
11 replies | 456 view(s)
• 11-05-2018, 07:07 AM
what is the angle alpha in the attached? the other angle near alpha at point A should b 50 degrees. but then i can not proceed.
9 replies | 452 view(s)
• 11-09-2018, 06:47 AM
Ok, If i want to find the area enclosed between y = -6x^2+18x-12 and the x axis. I can integrate between x=1 and x=2 and answer equals 1. If i...
10 replies | 351 view(s)
• 11-07-2018, 02:03 PM
When using a fraction solution to make a division problem into a decimal where do they get the 20/20 fraction as in this problem?
9 replies | 440 view(s)
• 11-06-2018, 05:16 AM
The question says a ball and a bat cost 4000 USD together. The shop sold the bat at a profit of 30% and the ball at a loss to 15% for 4500. Find the...
8 replies | 506 view(s)
• 11-09-2018, 07:16 AM
In the attached I can figure from phytagoras, AC = 25/3 and AD = 7/3 considring AB = AC and and agin from phtagoras BC = 10. But then I am stuck. ...
9 replies | 339 view(s)
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