Search:

I've been in your shoes and I know how it feels. I was 18, too, when I met my boyfriend and the first year was filled with lots of questions and fears for exactly the same reasons you described (no...

That's the problem, that I couldn't do anything. I don't know how to express the formula for endomorphism. I only know that the domain should be equal with the codomain and in this case is true, but...

Given the function f : R^3 \rightarrow R^3, f(x,y,z) = (x+y, y-z, 2x+y+z) how can I prove that f \epsilon End_R(R^3) ?

I know it's kind of one sided, but my hobbies are not very appealing to him.

My hoobies are:
- programming (he doesn't know anything about it)
- dance sports (he likes football, wresling, brutal...

********Threads have been merged together*********

I'm sorry I have to bring back the discussion from March (https://www.askmehelpdesk.com/relationships/dont-want-boring-anymore-738257.html) but...

Thank you so much for your answers! Now I feel more hopeful about the future :)

I see a point in what you said, but would you be so nice to give me some tips on how to start getting to know more about sports, video games, cars and other topics? I feel like an alien when it comes...

I have met a wonderful guy and we've been together for three months now. He's perfect, everything I've ever wanted, but I still fear our relationship will crash because of me.

I have a kind of...

I met a guy about 12 days ago on Facebook and we chatted about one week till we finally met. Honestly, I don't want to have any relationship right now for I'm very busy with school, I need to study a...

Could you give me some tips on how to solve this, please?

\int\frac{e^x - 2}{e^{2x} + 4} \mathrm{d}x

I need some help in proving the statement:

\frac{1}{\cos x \cos 2x} + \frac{1}{\cos 2x \cos 3x} + ... + \frac{1}{\cos nx \cos (n+1)x} = \frac{\tan (n+1)x}{\sin x}

I'm a kind of shy person, I usually like to listen more than talk, but when I start talking you can hardly stop me. I have only two good friends and I'm happy I have them, but I would like to become...

\lim_{ x \to 0 \\ x>0} (9 ln x - x^2 - 3x + 2) = ?

\lim_{ x \to \frac{1}{2} \\ x > \frac{1}{2} } [ ln(2x-1) + x ] = ?

Yes, that's right, ebaines. But what operations should I do in order to determine the limit, except using l'Hospital's rule?

For example, this limit can be determined in two ways:

\lim_{ x \to...

\lim_{ x \to \infty} \frac{x^3 + x^2 -1}{e^{2x} + e^x + x^2}

My boyfriend is a dancer. He has been dancing for the last 15 years but now he has some troubles with his knees, so I fear he will have to quit soon. I'm so worried about him, I've never seen him so...

Thank you, rpray2007 and ArcSine! I tried something similar too, but I got struck at the modulus. Now I know what I have to do :)

sqrt(a^2 + a + 1) = 2 - |a|

I need some love songs... a lot of deep songs known or unknown for my boyfriend. I would be grateful for any suggestion :)

If x_1, x_2, ... , x_n solutions of the equation x^n - 1 =0

Prove that: \frac{1}{1-x_1} + \frac{1}{1-x_2} + ... + \frac{1}{1-x_{n-1}} = \frac{n-1}{2}

The counselor from school doesn't have very effective ideas, every time I sought for some kind of help she gave me some answers that I already knew (I surfed the internet first), so I don't think it...

Unfortunately I don't think I have any chance to find such person. Everybody who knows me expect so much from me, they just cannot believe me that I can't be who I used to be, they always say they...

I used to be a very active person. I loved to study, to find out new things and to get involved in as many activities as possible. There was a time when I truly believed that if I learned, one day I...

X^5 = (a+d)^4 X

I don't know what went wrong while editing...

M = \begin{bmatrix}
2 & 2
1 & 1
\end{bmatrix}

Solve the equation: X^5=A, X \epsilon M_2 (R)
__________________________________________________________

If X = \begin{bmatrix}
a & b

Thanks a lot. I love them :)

I met this guy about 2 months ago and it was that kind of love at first sight. We had such a great time together, but after winter holiday he had to leave the town for he is at university and I'm...

I'm 18 and he's 20, but I don't think that age really matters for he still likes playing games. We have a game that we play from time to time, but I'd like to know if there are some other things that...

I have long distance relationship and the guy is very lively and creative. I really have fun with him, but I can't boast with his qualities. I'd like to come up with some great ideas of spending time...

Do you happen to know some great pianists or violinists? I have just learned about Andre Rieu and I'm so fascinated with his music and his style... I'd like to know if there are some other artists...

Thank you, poet31! You really made me realize some aspects that upset me. I will try to express these feelings through some stories though for I'm not good at poetry but I'll try Sylvia Plath, too. I...

In the last months I've seen on TV a lot of young ladies who resorted to suicide and shocked everybody for they all seemed to lead such a happy and perfect life. Most of them are supposed to have...

S_3=\frac{n^2}{4}

Now it is more clear... and yes, I meant 2n-2 instead of 2n-1, thank you for pointing the mistake.

Here is what I succeeded on solving for the first permutation:

Case 1 (odd-odd): 1<3<5<......

An example of how I generally solve this type of problem:

\[
\sigma =
\begin{pmatrix}
1 & 2 & 3 & 4 & \cdots & n & n+1 & n+2 & \cdots & 2n \\
2 & 4 & 6 & 8 & \cdots & 2n & 1 & 3...

Sorry for committing the same mistakes, I hope this time it works.

I need to find the sign of the permutations (\varepsilon(\sigma)= \Pi \frac{\sigma(j) - \sigma(i)}{j-i}) but I think it would be...

Yes, this what I meant and thank you for fixing the problem.

I need to find the sign of the permutations ([/math]\varepsilon(\sigma)= \Pi \frac{\sigma(j) - \sigma(I)}{j-i}[\math]) but I think it...

1.[math]\[
\sigma =
\begin{pmatrix}
1 & 2 & 3 & 4 & \cdots & 2n-2 & 2n-1 & 2n \\
1 & 2n & 3 & 2n-1 & \cdots & 2n-3 & 4 & 2n-1 & 2
\end{pmatrix}
\][\math]

2.[math]\[
\sigma =

How to solve this sum of combinations?

C_n^2 + 2 C_n^3 + ... + (n-1) C_n^n

How to solve this equation by using induction?

\frac{(n+1)!}{1!} + \frac{(n+2)!}{2!} + ... + \frac{(n+p)!}{(p!)} = \frac{1}{n+1} \[ \frac{(n+p+1)!}{p!} - (n+1)!\]


for n=k:
...

Thank you ebaines! It is easier than thought. I should have kept [math]sin^2 x + cos^2 x[math] on the left side instead of writing 1.

I meet some problems in solving some equations. I tried a lot of methods, but I didn't get any solution, so I'd be grateful if you could give some ideas.

1) \sin^3 x + \cos^3 x = \cos 2x, for -90...

Recently, while going home by bus, I've heard a quite strange discussion (I know that is not kind to listen to what other people talk, but I just happened to hear) and at some point, one person said...

Thank you Talaniman. Your answer means a lot to me because everybody told me to break up with him, but since you don't know him in person and he didn't hurt you in some way, I suppose you're right....

Yes Talaniman, it's the same guy. Since then he has been very constant in his feelings. He had just a short teenager crisis, but I worried because I was deeply in love with him. Now, I'm not sure....

What would you do if you had a boy who loves you from the bottom of his heart, but you feel that he is not thoroughly fulfilling you (I mean that he may be annoying from some points of view, but he...

Unfortunately, I don't know a counselor dealing specifically with anxiety, but I'll try go back to my counselor and I hope this is going to be the last time.

My family doesn't put much pressure on...

In the elementary and middle school I used to be a very good student (without boasting). Now I am in the second year of high-school and I meet some difficulties, not because the objects are...

My boyfriend is a very angry person. He quarrels everyday with someone (especially with his mother) anywhere he goes, but he is very kind and patient around me. Is it because he is in love with me or...

Threads merged

I have been dating my boyfriend for almost one year. We have spent a really great time together; we could talk forever and never get bored; we look at each other and fall in love...