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#1 Help Me ! » linear system condition number » 2020-05-05 19:35:55
- cooljackiec
- Replies: 0
Hi all,
Given a linear system
, and , we know that:.What nonzero vectors of b and
, assuming that , will equality hold?#2 Re: Help Me ! » Calculus » 2016-04-13 14:59:19
but what is the steps taken to solve it?
do i need (xy^2)(x+y)=6 or something?
#3 Help Me ! » Calculus » 2016-04-12 09:23:38
- cooljackiec
- Replies: 5
What is the slope of the tangent to the curve y^3x + y^2x^2 = 6 at (2,1)
I'm confused what to do am I supposed to isolate y??
#4 Re: Help Me ! » Functions » 2016-03-10 15:22:04
thanks a lot 
#5 Re: Help Me ! » Functions » 2016-03-08 15:40:59
oh i see i messed up calculations. How exactly can you find b though?
#6 Help Me ! » minimum value » 2016-03-07 16:40:32
- cooljackiec
- Replies: 2
I tried AM-GM with
and but that had netted no real progress. I'm confused in how x+y=1 comes in to be handy#7 Re: Help Me ! » Functions » 2016-03-07 16:36:38
thanks for the clarifications.
I'm confused on how you found the answer to a.
g(2015) is close to g(2016)=g(672)=g(224). g(224) is close to g(225)=g(3)=g(1). So g(2015) maximum seems to be g(1)+2. So is the answer not 3?
#8 Help Me ! » Functions » 2016-03-05 14:08:11
- cooljackiec
- Replies: 6
I am a little confused on this notation and what it means? more specifically what does it mean N->N
and also what does it mean on the line with: g(n+1)-g(n)
#9 Re: Help Me ! » Floor functions » 2015-03-31 11:49:13
Why did you guys remove {x}
How do u solve this?
#10 Re: Help Me ! » Log propeties » 2015-03-31 11:45:28
Oh I get it, I'll post when I am not on mobile
#11 Help Me ! » Log propeties » 2015-03-30 08:48:17
- cooljackiec
- Replies: 2
11. Write as the sum or difference of logarithms:
#12 Re: Help Me ! » Floor functions » 2015-03-30 08:46:03
#13 Re: Help Me ! » Floor functions » 2015-03-26 03:22:40
#14 Help Me ! » Floor functions » 2015-03-25 15:45:22
- cooljackiec
- Replies: 14
{a} denotes the fractional part of a
#15 Re: Help Me ! » Sequence » 2015-03-25 09:25:45
I got (a+2e-3)^2=(a+3e+2)(a+e-4) which gives 10a+e^2+22e-4=0
#16 Re: Help Me ! » Telescoping sum? » 2015-03-25 09:19:50
Derp I thought that 3^0+1 was 1 my bad
#17 Re: Help Me ! » Telescoping sum? » 2015-03-25 09:17:34
I tried S=the thing posted and S/3, not exactly sure how to do it, I have 3^k/(3^k+1)
#18 Re: Help Me ! » Sequence » 2015-03-25 09:14:57
with r = common ratio.
So eliminate b, c and d from the GP equations and then divide the first by the second and first by the third to eliminate r and leave a pair containing just a and e.
How exactly do you "eliminate b"
#19 Re: Help Me ! » Telescoping sum? » 2015-03-25 09:08:38
Using the above, how would you get 2?
#20 Re: Help Me ! » Telescoping sum? » 2015-03-24 16:38:59
Sounds intuitive, can you try to explain what your thought process was?
#21 Re: Help Me ! » Telescoping sum? » 2015-03-24 14:32:24
o.O how in the world do you get that...
#22 Re: Help Me ! » Sequence » 2015-03-24 08:30:56
I used the method before I posted but didn't get anywhere 
#23 Help Me ! » Sequence » 2015-03-24 05:18:48
- cooljackiec
- Replies: 14
Find the arithmetic sequence a, b, c, d if a−2, b−4, c−3, d+2 is a geometric sequence.
#24 Help Me ! » Telescoping sum? » 2015-03-24 05:11:21
- cooljackiec
- Replies: 12
#25 Re: Help Me ! » tedious fractions » 2014-11-03 15:31:00
I have no clue either.