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• Today, 04:08
Your solution to the given IVP isn't correct...we are given: \d{y}{x}=9x^8e^{-x^9} where y(0)=8 \int_{y(0)}^{y(x)}\,du=\int_0^x...
1 replies | 47 view(s)
• Yesterday, 23:42
Hello, MHB Community! (Wave) We are pleased to announce a new method for embedding Desmos calculators in your posts, which we hope you will find...
0 replies | 46 view(s)
• Yesterday, 21:22
Hi, welcome to the forum! Let's write out what we know. $width = w + 5$ The length is also given, but it's been disguised a little bit.
1 replies | 47 view(s)
• Yesterday, 21:00
What have you tried so far? Do you have any experience with c++? I think you might need to provide more information about the variables involved,...
1 replies | 39 view(s)
• Yesterday, 19:18
Do you have a question?
1 replies | 26 view(s)
• Yesterday, 12:24
MarkFL replied to a thread [SOLVED] 9.1.14 Use Euler's method to calculate in Calculus
Given: \d{y}{x}=f(x,y) Euler's method is the recursion: y_{n+1}\approx y_{n}+\Delta x\cdot f\left(x_n,y_n\right) Now, in the given...
2 replies | 73 view(s)
• February 20th, 2017, 20:40
Hi MWD02! Welcome to MHB! ;) Even if $N$ would be an integer, for $N\ge 5$ this is a polynomial of at least the 5th degree with at least 3 terms,...
4 replies | 104 view(s)
• February 20th, 2017, 17:51
I like Serena replied to a thread Terminology in Analysis
The word canonical means the obvious (choice). For instance, if we start from a 3-dimensional coordinate system, and project the 3rd coordinate to...
3 replies | 85 view(s)
• February 20th, 2017, 14:41
caffeinemachine replied to a thread Terminology in Analysis
The word canonical is in my experience used rather loosely in mathematics and I suppose the best thing to do is not worry about it too much. On...
3 replies | 85 view(s)
• February 19th, 2017, 22:53
I do not see any problem with defining the notion of an irreducible in an arbitrary ring. Though we may not get any nice theorems concerning...
1 replies | 76 view(s)
• February 19th, 2017, 11:04
MarkFL replied to a thread Hi everyone! in Introductions
Hello and welcome to MHB, Raisa! (Wave)
3 replies | 81 view(s)
• February 19th, 2017, 10:02
caffeinemachine replied to a thread Hi everyone! in Introductions
Hey Raisa! I am currently a PhD student in mathematics, but I was also a mechanical engineering undergrad before I switched to math. I would say that...
3 replies | 81 view(s)
• February 19th, 2017, 00:03
greg1313 replied to a thread Rhombus question in Geometry
$x=\angle{B},\quad2x+4(180-2x)+120=360\implies x=80^{\circ}\implies\angle{BAD}=100^{\circ}$
3 replies | 66 view(s)
• February 18th, 2017, 23:54
It's just seven. You're squaring the RHS which introduces an extraneous solution.
3 replies | 70 view(s)
• February 18th, 2017, 20:12
Yes. $$= = = 1$$
3 replies | 65 view(s)
• February 18th, 2017, 19:34
Hi FallArk! The $$notation indicates the floor function. That is, rounding down to the nearest integer below x. Btw, I prefer the notation... 3 replies | 65 view(s) • February 18th, 2017, 17:49 I like Serena replied to a thread [SOLVED] How to prove continuity? in Analysis Hi FallArk! ;) Let's take the definition of continuity into account:$$\lim_{x\to c} f(x) = f(c) \ne 0 This means that for any $\epsilon>0$...
4 replies | 76 view(s)
• February 18th, 2017, 02:29
MarkFL replied to a thread 231.14.88 3d surface in Calculus
Multiplying through by $9+6x-8y$ and distributing the $26$, we obtain -x^2-y^2+z^2=156x-208y+234 -x^2-156x-y^2+208y+z^2=234 ...
3 replies | 64 view(s)
• February 17th, 2017, 17:44
Simplex yes. And no, we didn't need to figure out the configurations - they were given. At best it helps a bit to understand the problem statement....
11 replies | 151 view(s)
• February 17th, 2017, 16:05
Looks good. Does that mean that we're done? (Wondering)
11 replies | 151 view(s)
• February 17th, 2017, 15:20
Yes and yes. What would the objective function be? (Wondering)
11 replies | 151 view(s)
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1. Hi, pls help me to solve for x, 2^x =8x. Thanks.
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