/sci/ - Science & Math

File: 13 KB, 260x324, 416vd8kDeiL._SX258_BO1,204,203,200_.jpg [View same] [iqdb] [saucenao] [google]

Anonymous Mon Sep 19 20:21:28 2016 No.8357515 [Reply] [Original]

Fuck this book, seriously. These exercises towards the end are freaking impossible!

>>	Anonymous Mon Sep 19 20:32:13 2016 No.8357541 >>8357515 u just suck at math tobehonest

>>	Anonymous Mon Sep 19 20:36:52 2016 No.8357551 File: 106 KB, 720x561, isaac-newton-list-of-sins.jpg [View same] [iqdb] [saucenao] [google] >>8357515

>>	Anonymous Mon Sep 19 20:41:27 2016 No.8357564 >>8357541 OK try this one math prodigy lim x -> inf (x - sqrt(x^2 - 1 ))

>>	Anonymous Mon Sep 19 20:46:04 2016 No.8357579 >>8357564 are you retarded?

>>	Anonymous Mon Sep 19 20:49:54 2016 No.8357592 >>8357564 it's 0 anon, not hard

>>	Anonymous Mon Sep 19 20:51:41 2016 No.8357595 >>8357592 How do you rewrite the equation so you can use L'Hospital rule on it though? inf - inf is undeterminable

>>	Anonymous Mon Sep 19 21:00:19 2016 No.8357613 >>8357595 divide everything by the highest term. In this case the highest term is x^1

>>	Anonymous Mon Sep 19 21:02:29 2016 No.8357619 >>8357595 I mean, you could multiply it by x/x and go from there, couldn't you?

>>	Anonymous Mon Sep 19 21:08:12 2016 No.8357635 >>8357613 >>8357619 I'm screwed lads

>>	Anonymous Mon Sep 19 21:15:20 2016 No.8357645 File: 61 KB, 851x1272, WolframAlpha--limit_as_x___infinity_of_x_sqrt_x_2_1___Limit____2016_09_19_20_14.jpg [View same] [iqdb] [saucenao] [google] >>8357635

>>	Anonymous Mon Sep 19 21:18:53 2016 No.8357657 >>8357645 Wow thank you , what program is that??

>>	Anonymous Mon Sep 19 21:21:49 2016 No.8357667 >>8357595 [math]lim\displaystyle_{x\to{T}}\frac{f'(x)}{g'(x)}[/math] ad infintum, until you get to the answer

Anonymous Mon Sep 19 21:22:57 2016 No.8357670

>>8357657
Wolfram alpha. I use it quite often so I bought pro which also allows you to see solutions.

Also, you could just multiply by x/x if that solution wasn't intuitive enough. As a rule though, you should always try multiplying by a conjugate (conj of a+b is a-b) when you have a+b types of problems.

>>	Anonymous Tue Sep 20 01:59:57 2016 No.8358195 You can also divide the x^2 out of the square root and then apply L'Hopitals

>>	Anonymous Tue Sep 20 02:03:20 2016 No.8358205 >>8358195 no you can't

>>	Anonymous Tue Sep 20 02:04:53 2016 No.8358208 >>8357515 If they were impossible they would never be in that book with correct answers. If they were impossible you would've never tried them. Nothing is impossible. Just Do It!

>>	Anonymous Tue Sep 20 02:05:44 2016 No.8358210 >>8358208 >Nothing is impossible brainlet pls go

>>	Anonymous Tue Sep 20 02:24:04 2016 No.8358245 >>8358205 Yeah you can, it's more contrived though

Advanced search
Text to find
Subject [?]Search by post subject. Leave empty for any.
Username [?]Search for user name. Leave empty for any user name.
Tripcode [?]Search for tripcode. Leave empty for any.
Email [?]Search by email. Leave empty for any.
Filename [?]Search by image filename. Leave empty for any.
From Date [?]Enter what date to start searching from. Format is YYYY-MM-DD
To Date [?]Enter what date to start searching until. Format is YYYY-MM-DD
Image hash
Search in	All Posts OPs Only
Deleted posts	Show all posts Show only deleted posts Only show non-deleted posts
Internal posts	Show all posts Show only internal posts Show only archived posts
Order	New posts first Old posts first
Capcode	All Posts Only by Users Only by Mods Only by Admins Only by Developers
Results	Posts Threads
Action	[ Simple ]