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Type: Posts; User: lemon14
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Since this is homework, I am not allowed to post the problem, so I will describe it in more general terms.
In a store there are N types of objects. Each object has a price and a list of compatible...
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I have a relationship for about 10 months with a guy and the last two months have been at the distance. In two weeks I will celebrate my birthday and I overheard he wanted to make me a surprise....
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Oh, that's easy, it's zero. Thank you!
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I kind of stumbled on these 3 limits. I tried to solve 2 of them, but I don't know if it's correct and for the third one I don't have any idea where to start from. Could help me, please?
1. ...
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1*1! + 2*2! + 3*3! +... +n*n! And how do you get it?
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I've been with my boyfriend for 6 months now and he has always been a liar. I didn't care much when we first met because I didn't know I was going to have a relationship with him later and his lies...
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I don't want to be rude, but it does sound like a movie script. I'm not sure if your story really happened this way or it is you that see it this way. Never mind. Judging by what you said it's easy...
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10 days ago I lost my virginity but we didn't really have sex. It was just a trial to get myself accustomed to it (I needed patience to get rid of some bad memories related to sex) and I accepted to...
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I've always had faith in God but I still can't understand why people have to die...
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That my father is sick and he could die soon.
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I'm sorry to add that it was not my concern after her death. She died 8 years ago, I never met her, so when I entered her house for the first time it was like a museum for me. Please, do no...
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Actually, there are a lot of things going on in my life: I work in shop a couple of hours a day, I read a lot, I hang out with friends, go to the gym etc. I don't have time to get bored or worry...
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The question is: how can I change my view towards death?
I'm sorry for your loss and for "offending" death, but this is how I feel, it's not my choice to feel this way.
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I'm not afraid of dying, but I'm terrified when thinking that one day my parents will die, my friends, my future husband etc. Even if I wasn't close to a person, but I knew him/her while they were...
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I've tried watching Prison Break, Covert Affairs, Supernatural, Suits, Lie to me, Sherlock Holmes, Lost, Nikita, One Three Hill, Awake, The Game of Thrones, Merlin, House, Six feet under, The...
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Thank you, Ebaines! I did work out, indeed! :)
(\sin x + \cos x)^2 = \sin^2 x + \cos^2 x + 2 \sin x \cos x
\Rightarrow \sin x \cos x = \frac{(\sin x + \cos x)^2 -1 }{2}
\cos \(x -...
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I need to bring this equation \sin x + \cos x - \sin x \cos x - m = 0
to this form: 2 \cos^2 \( x - \frac{\pi}{4} \) - 2 \sqrt{2} \cos \( x - \frac{\pi}{4} \) +2m -1 = 000
How do I get...
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Hey, amillersong! What you're feeling right now it's PERFECTLY NORMAL. I mean, you had a two years relationship with her and according to what you said, you had also been quite committed to her, so...
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f : [0,2] \rightarrow R , f differentiable on [0,2] and f(0) = 0
Prove that \exists c \epsilon (0,2) so that f'(c) = \frac{f(c)}{2-c} is true.
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2x^3 - 5x^2 + 20x - 9 = 0
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That's a wonderful suggestion, tkrussell!
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Oh, thank you, ksak2011! I didn't know about any of the songs you cited, but I enjoy them fully!
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Today I caught him lying. I called him around 2 PM just to see what's new. I didn't have the time to call him when he wanted me to because I was at school, so I called him after classes. He didn't...
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Oh, sorry, there should have been "+" between all the terms, but it seems there is a problem with the code.
So, the first equation should have been 28 = sqrt (a + b) and the second one 40 = sqrt (...
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\left\{
\begin{array}{l l}
28=sqrt{a b}\\
40=sqrt{(20 a)^2 b^2}\\
\end{array} \right.
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You're so right, Cat1864. You really alarmed me with this: I couldn't stand hearing this from him, so I must fix this problem as soon as possible.
I'm not sure if I let the impression that I'm...
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I'm 19, he's 20.
We've constantly met in person about 2 weeks, every time in completely different situations, so I had the chance to learn how he is like around other people and only around me....
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Thank you, imfkdup!
This is an extremely enlightening answer, I will follow your advice.
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I have a long distance relationship with this guy I can hardly resist. I mean, he so mysterious, so funny and imaginative... still I usually don't know what he feels and how to comfort him in bad...
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I'm not sure how to deal with this type of exercises. Here is what I solved so far:
1.
f(x)=f(x^2), x \geq 0
f(x)=f(x^2)=f(x^4)=...=f(x^{2n})
f(x)=f(x^{2n})\Rightarrow f(x)= \lim_{n \to...
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Could you suggest me, please, some artists that have great songs (that both sound good and have meaningful lyrics) ? It doesn't matter what kind of music they play, I'm just looking for some songs...
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How to approach this exercise? I've tried a lot of methods and always reached 0/0.
\lim_{x \to 0} \frac{\sin x - \tg x}{\sin^2 x \tg x }
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Well, I don't quite understand your explanation for I haven't learned about derivatives yet, that's why I tried to use the formula \lim_{x \to 0} \frac{sin x}{x} = 1 , but at the numerator there is ...
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\lim_{x \to 0} \frac {\cos 5x - \cos x}{\sin 4x} = \lim_{x \to 0} \frac{-2 \sin 3x \sin 2x}{\sin 4x} = \lim_{x \to 0} = \frac {-2 \frac {\sin 3x}{3x} \times 3x \times \frac {\sin 2x}{2x} \times 2x }{...
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Sorry, it is my fault I didn't mention that I'm looking for another method (e.g. summing lines / columns or other operations) so that I can calculate it easier.
Regarding the + I typed each of...
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| -2a a+b a+c // b+a -2b b+c // c+a c+b -2c |
I have problems with displaying the "+" sign every time I post. Is there a specific rule for writing expressions containing "+" ?
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\begin{vmatrix}
-2a & a+b & a+c \\
b+a & -2b & b+c \\
c+a & c+b & -2c
\end{vmatrix}
EDIT by Unknown008: Added the + signs.
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For a mathematical display you should write math mathematical expression /math. "math" words must be between []
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Thank you Corrigan. It is helpful, indeed, although I haven't learned about L'Hopital's rule yet.
I am getting started with the rest of the exercises, but I'm not sure about the those with both a...
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... and \lim_{n \to \infty}
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Sorry, there are some mistakes. It seems there occurred an error with "+".
1. lim [a + bn/(n^2 - 1)]^n = e^2
2. lim [(n^2 + an + 1)/(n^2 + 3n - 2)]^n = e
3. lim [(an^2 + bn + 2)/(bn^2 + 4n +...
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Could you give me some advice on how to approach this type of problems, please?
a,b \epsilon R
1. \lim_{x \to \infty} \left(a \frac{bn}{n^2-1} \right)^n = e^2
2. \lim_{x \to \infty}...
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Thank you. I've been struggling to solve it for a few days, but now I'm so happy that I finally see the method. However, I didn't quite catch where you got the expressions from when n is odd / even.
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There should have been A^{n+1} and (a_n) + (b_n) instead of (a_n)(b_n). I don't know what went wrong. :|
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Given the matrix:
\[
A =
\begin{pmatrix}
0 & 1 & 1 \\
1 & 0 & 1 \\
1 & 1 & 0
\end{pmatrix}
\]
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Well, not really.
I haven't learnt about derivatives yet, so I guess the curve will help more.
In this case, I can deal with it, I just didn't know this exercise required some other knowledge....
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How to calculate the minimum and the maximum value of the function f(x) = 3 cos3x - 4 sin3x - 2 ?
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