# Recent content by solar nebula

2. ### Solving an inquality

Homework Statement So this is the question |x-1|+|x-2|>1 Homework Equations N/A The Attempt at a Solution I tried it, the solution seems right, but i don't know if my approach is correct.
3. ### Multiplicity of a gas

its wrong: it should be [(1/N!)*((A*pi)^N)*(2MU)^N]/ (h^2N)*(N!)
4. ### Finding the domain for inequality

I think i got it now:, Also when i take a square root of a number, isn't that i should take the positive and negative root?. I understand for \sqrt{x^2}=x, because its basically \abs{x}
5. ### Finding the domain for inequality

Just to make it simple to solve for now, i am not going to look at case a=0 (only for now) so i tired to do this: Again my solution is wrong, i am now covering the entire number line (-inf,+inf), i feel like i am messing up basic algebra. Please help
6. ### Finding the domain for inequality

Homework Statement The problem is: for all 0≤a≤1 so i need to find the domain Homework Equations N/A The Attempt at a Solution I tried it like this: yet my solution is wrong,i am not so sure why. wolfram gives me this;
7. ### Solving |x-1|*|x+1|=0

But when I try to do the same thing for |x-1|*|x+2|=3 which is: |x-1|*|x+2|=3 |x-1|=3 or |x+2|=3 x-1=3 or x+2=3 x=4 or x=1 But this solution does not make sense... please help, Thanks!
8. ### Solving |x-1|*|x+1|=0

Homework Statement find all the numbers x for which |x-1|*|x+1|=0 Homework Equations The Attempt at a Solution |x-1|*|x+1|=0 |x-1|=0 or |x+1|=0 x-1=0 or x+1=0 x=1 or x=-1 but I think there's a flaw some in my attempt solution...or the whole thing is a flaw.. any help...
9. ### Great web resource for math and more that I just found

Hi, I only used Khan Academy videos for Linear Algebra (even though i knew about them long before) because my prof puts up so we could see it before our linear algebra lecture. The videos are great. I am surprised you guys haven't heard of Khan Academy. cheers! p.s I'm sorry that the answer to...
10. ### Help with Michael Spivak's fourth edition calculus book

Well, I had taken a course in first semester(in which we used Spivak's book).Then dropped it and will be taking it in the second semester . Now that I have bit of time before second semester, I just want get a bit comfortable with proofs. Intwo said to try "How to Prove It: A Structured Approach...
11. ### Help with Michael Spivak's fourth edition calculus book

Thanks, I'll check it out.
12. ### Help with Michael Spivak's fourth edition calculus book

Can you please let me know the title of the Schaum's outline book? Thanks.
13. ### Help with Michael Spivak's fourth edition calculus book

I am a computer science student.The only proofs I have done is trigonometric proofs, when you show one side is equal to the other side. I have done high school calculus and functions, I know them well. Spivak's kind of math is the kind of math I want to learn, because it's no longer just...
14. ### Post for helm under learning section why is this?

Oh ok, thanks.
15. ### Help with Michael Spivak's fourth edition calculus book

Hi, I am having difficulties doing the problems in Michael Spivak's fourth edition calculus book. I am not sure how to approach the problems. I am able to understand the contents chapters but when I start to do the chapter problems, I have no idea how to do them.Any advice will be...