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757 | help-10 | 3f9a2167445444539ec2b9d0789fe337 | 227,858,073,497,108,480 | rice | 11/07/2021 10:24:58 | So the next term of x2n+1 | 1 | 0 | null | null | null | null | null | |||||
757 | help-10 | 3f9a2167445444539ec2b9d0789fe337 | 227,858,073,497,108,480 | rice | 11/07/2021 10:25:00 | will be that | 1 | 0 | null | null | null | null | null | |||||
757 | help-10 | 3f9a2167445444539ec2b9d0789fe337 | 227,858,073,497,108,480 | rice | 11/07/2021 10:25:11 | Recursion is really confusing, need to do more exercises I think :S Hard to understand | 1 | 0 | null | null | null | null | null | |||||
757 | help-10 | 3f9a2167445444539ec2b9d0789fe337 | 474,549,305,777,061,900 | Euler2 | 11/07/2021 10:25:28 | This is a hard example to first learn it | 0 | 1 | 474,549,305,777,061,900 | Euler2 | 3796 | Euler2 | false | |||||
757 | help-10 | 3f9a2167445444539ec2b9d0789fe337 | 474,549,305,777,061,900 | Euler2 | 11/07/2021 10:25:39 | Do you know the easier examples | 0 | 1 | null | null | null | null | null | |||||
757 | help-10 | 3f9a2167445444539ec2b9d0789fe337 | 227,858,073,497,108,480 | rice | 11/07/2021 10:26:00 | Uh, 1/n, we saw more or less how to do it in class | 1 | 0 | null | null | null | null | null | |||||
757 | help-10 | 3f9a2167445444539ec2b9d0789fe337 | 227,858,073,497,108,480 | rice | 11/07/2021 10:26:01 | :S | 1 | 0 | null | null | null | null | null | |||||
757 | help-10 | 3f9a2167445444539ec2b9d0789fe337 | 227,858,073,497,108,480 | rice | 11/07/2021 10:26:14 | more or less | 1 | 0 | null | null | null | null | null | |||||
757 | help-10 | 3f9a2167445444539ec2b9d0789fe337 | 474,549,305,777,061,900 | Euler2 | 11/07/2021 10:26:14 | Okay goodluck | 0 | 1 | null | null | null | null | null | |||||
757 | help-10 | 3f9a2167445444539ec2b9d0789fe337 | 227,858,073,497,108,480 | rice | 11/07/2021 10:26:18 | thanks | 1 | 0 | null | null | null | null | null | |||||
757 | help-10 | 3f9a2167445444539ec2b9d0789fe337 | 227,858,073,497,108,480 | rice | 11/07/2021 10:26:28 | Do you have any other examples i can look up on youtube or something? to learn? | 1 | 0 | null | null | null | null | null | |||||
757 | help-10 | 3f9a2167445444539ec2b9d0789fe337 | 227,858,073,497,108,480 | rice | 11/07/2021 10:26:44 | the easier ones? | 1 | 0 | null | null | null | null | null | |||||
758 | help-10 | e1e1cd94aa1f4507b22b4e9569d65f3c | 456,226,577,798,135,800 | Deleted User | 02/18/2022 13:11:53 | How do I find a multiplicity of a zero in this | IMG_3644.png | 1 | 0 | null | null | null | null | null | ||||
758 | help-10 | e1e1cd94aa1f4507b22b4e9569d65f3c | 456,226,577,798,135,800 | Deleted User | 02/18/2022 13:11:58 | each unit is 1 | 1 | 0 | null | null | null | null | null | |||||
758 | help-10 | e1e1cd94aa1f4507b22b4e9569d65f3c | 456,226,577,798,135,800 | Deleted User | 02/18/2022 13:12:24 | and i understand that -4, 2, 6 are zeros | 1 | 0 | null | null | null | null | null | |||||
758 | help-10 | e1e1cd94aa1f4507b22b4e9569d65f3c | 456,226,577,798,135,800 | Deleted User | 02/18/2022 13:12:37 | but idk how to find the multiplicity of it | 1 | 0 | null | null | null | null | null | |||||
758 | help-10 | e1e1cd94aa1f4507b22b4e9569d65f3c | 456,226,577,798,135,800 | Deleted User | 02/18/2022 13:12:48 | i know how to understand if it’s a odd multiplicity or even | 1 | 0 | null | null | null | null | null | |||||
758 | help-10 | e1e1cd94aa1f4507b22b4e9569d65f3c | 456,226,577,798,135,800 | Deleted User | 02/18/2022 13:12:56 | but idk how to find if it’s 1, 2, or 3 | 1 | 0 | null | null | null | null | null | |||||
758 | help-10 | e1e1cd94aa1f4507b22b4e9569d65f3c | 456,226,577,798,135,800 | Deleted User | 02/18/2022 13:13:00 | (the multiplicity) | 1 | 0 | null | null | null | null | null | |||||
758 | help-10 | e1e1cd94aa1f4507b22b4e9569d65f3c | 706,934,233,012,371,600 | Ansh_ | 02/18/2022 13:15:53 | _wow, yeah you forgot the dx = cos t dt_ | 0 | 1 | null | null | null | null | null | |||||
758 | help-10 | e1e1cd94aa1f4507b22b4e9569d65f3c | 456,226,577,798,135,800 | Deleted User | 02/18/2022 13:18:08 | @Helpers | 1 | 0 | null | null | null | null | null | |||||
758 | help-10 | e1e1cd94aa1f4507b22b4e9569d65f3c | 266,701,848,969,216,030 | opfromthestart | 02/18/2022 13:21:56 | Basically, you want to look at just the area around the zero, and see if it looks like x, x^2, x^3,etc. | 0 | 1 | null | null | null | null | null | |||||
758 | help-10 | e1e1cd94aa1f4507b22b4e9569d65f3c | 266,701,848,969,216,030 | opfromthestart | 02/18/2022 13:22:26 | take x=2 first, what does the area around x=2 look like? | 0 | 1 | null | null | null | null | null | |||||
758 | help-10 | e1e1cd94aa1f4507b22b4e9569d65f3c | 706,934,233,012,371,600 | Ansh_ | 02/18/2022 13:26:25 | say: f(x) = (x - a)^n q(x)
then, f'(x) = n(x - a)^{n-1} q(x) + (x - a)^n q'(x) = (x - a)^{n - 1} [ nq(x) + q'(x) ] | 0 | 1 | null | null | null | null | null | |||||
758 | help-10 | e1e1cd94aa1f4507b22b4e9569d65f3c | 706,934,233,012,371,600 | Ansh_ | 02/18/2022 13:27:37 | :this: | 0 | 1 | null | null | null | null | null | |||||
758 | help-10 | e1e1cd94aa1f4507b22b4e9569d65f3c | 706,934,233,012,371,600 | Ansh_ | 02/18/2022 13:28:17 | for example at x = 2, the curve is increasing as it cuts x - axis, => f'(x) > 0 but f(x) = 0 | 0 | 1 | null | null | null | null | null | |||||
758 | help-10 | e1e1cd94aa1f4507b22b4e9569d65f3c | 706,934,233,012,371,600 | Ansh_ | 02/18/2022 13:28:25 | so, multiplicity of x = 2, is 1 | 0 | 1 | null | null | null | null | null | |||||
758 | help-10 | e1e1cd94aa1f4507b22b4e9569d65f3c | 321,445,119,171,756,000 | Shuri2060 | 02/18/2022 13:28:30 | You realise that this is surely impossible | 0 | 1 | null | null | null | null | null | |||||
758 | help-10 | e1e1cd94aa1f4507b22b4e9569d65f3c | 321,445,119,171,756,000 | Shuri2060 | 02/18/2022 13:28:43 | You can only ever tell if it is odd or even from a rough sketch | 0 | 1 | null | null | null | null | null | |||||
758 | help-10 | e1e1cd94aa1f4507b22b4e9569d65f3c | 321,445,119,171,756,000 | Shuri2060 | 02/18/2022 13:29:06 | If they tell you the degree of the polynomial or something, that might help things | 0 | 1 | null | null | null | null | null | |||||
758 | help-10 | e1e1cd94aa1f4507b22b4e9569d65f3c | 456,226,577,798,135,800 | Deleted User | 02/18/2022 13:29:51 | ok ty | 1 | 0 | null | null | null | null | null | |||||
758 | help-10 | e1e1cd94aa1f4507b22b4e9569d65f3c | 456,226,577,798,135,800 | Deleted User | 02/18/2022 13:29:55 | how close | 1 | 0 | 412,086,528,508,952,600 | Carl | 8124 | Carl | false | |||||
758 | help-10 | e1e1cd94aa1f4507b22b4e9569d65f3c | 261,933,205,387,477,000 | riemann | 02/18/2022 13:29:59 | `.close` | 0 | 1 | null | null | null | null | null | |||||
758 | help-10 | e1e1cd94aa1f4507b22b4e9569d65f3c | 456,226,577,798,135,800 | Deleted User | 02/18/2022 13:30:07 | .cloae | 1 | 0 | null | null | null | null | null | |||||
758 | help-10 | e1e1cd94aa1f4507b22b4e9569d65f3c | 456,226,577,798,135,800 | Deleted User | 02/18/2022 13:30:12 | .close | 1 | 0 | null | null | null | null | null | |||||
759 | help-10 | 1014f182e96b452f99cad2382e5e2da8 | 619,328,010,968,891,400 | <344244<3 | 02/18/2022 16:37:51 | someone help please | tangent.png | 1 | 0 | 456,226,577,798,135,800 | Deleted User | 0000 | Deleted User | false | ||||
759 | help-10 | 1014f182e96b452f99cad2382e5e2da8 | 551,807,466,631,987,200 | Mat | 02/18/2022 16:38:51 | You already have m and need b | 0 | 1 | null | null | null | null | null | |||||
759 | help-10 | 1014f182e96b452f99cad2382e5e2da8 | 619,328,010,968,891,400 | <344244<3 | 02/18/2022 16:39:03 | is m right? | 1 | 0 | null | null | null | null | null | |||||
759 | help-10 | 1014f182e96b452f99cad2382e5e2da8 | 619,328,010,968,891,400 | <344244<3 | 02/18/2022 16:39:34 | 0.001 = 119.7(7) + b | 1 | 0 | null | null | null | null | null | |||||
759 | help-10 | 1014f182e96b452f99cad2382e5e2da8 | 619,328,010,968,891,400 | <344244<3 | 02/18/2022 16:40:30 | is b = -837.89 | 1 | 0 | 456,226,577,798,135,800 | Deleted User | 0000 | Deleted User | false | |||||
759 | help-10 | 1014f182e96b452f99cad2382e5e2da8 | 551,807,466,631,987,200 | Mat | 02/18/2022 16:41:02 | ,w d/dx(3.1 x^2-4.6 x) at x=7 | 0 | 1 | null | null | null | null | null | |||||
759 | help-10 | 1014f182e96b452f99cad2382e5e2da8 | 510,789,298,321,096,700 | TeXit | 02/18/2022 16:41:04 | Results provided by WolframAlpha | 0 | 1 | null | null | null | null | null | |||||
759 | help-10 | 1014f182e96b452f99cad2382e5e2da8 | 619,328,010,968,891,400 | <344244<3 | 02/18/2022 16:42:15 | ohh | 1 | 0 | null | null | null | null | null | |||||
759 | help-10 | 1014f182e96b452f99cad2382e5e2da8 | 551,807,466,631,987,200 | Mat | 02/18/2022 16:42:20 | ,w solve 3.1*7^2-4.6*7 = 38.8 * 7 +b | 0 | 1 | null | null | null | null | null | |||||
759 | help-10 | 1014f182e96b452f99cad2382e5e2da8 | 619,328,010,968,891,400 | <344244<3 | 02/18/2022 16:42:22 | mb i used the wrong m | 1 | 0 | null | null | null | null | null | |||||
759 | help-10 | 1014f182e96b452f99cad2382e5e2da8 | 510,789,298,321,096,700 | TeXit | 02/18/2022 16:42:23 | Results provided by WolframAlpha | 0 | 1 | null | null | null | null | null | |||||
759 | help-10 | 1014f182e96b452f99cad2382e5e2da8 | 619,328,010,968,891,400 | <344244<3 | 02/18/2022 16:42:44 | okayy | 1 | 0 | null | null | null | null | null | |||||
759 | help-10 | 1014f182e96b452f99cad2382e5e2da8 | 619,328,010,968,891,400 | <344244<3 | 02/18/2022 16:42:48 | thank you so muchh | 1 | 0 | null | null | null | null | null | |||||
759 | help-10 | 1014f182e96b452f99cad2382e5e2da8 | 619,328,010,968,891,400 | <344244<3 | 02/18/2022 16:43:26 | .close | 1 | 0 | null | null | null | null | null | |||||
760 | help-10 | 6ffe08e34928428f9d30fbbd9605b385 | 619,328,010,968,891,400 | <344244<3 | 02/18/2022 16:44:52 | .reopen | 1 | 0 | null | null | null | null | null | |||||
760 | help-10 | 6ffe08e34928428f9d30fbbd9605b385 | 619,328,010,968,891,400 | <344244<3 | 02/18/2022 16:44:58 | @Mat | 1 | 0 | null | null | null | null | null | |||||
760 | help-10 | 6ffe08e34928428f9d30fbbd9605b385 | 619,328,010,968,891,400 | <344244<3 | 02/18/2022 16:45:14 | so i i write out 38.8x+(-151.9) | 1 | 0 | null | null | null | null | null | |||||
760 | help-10 | 6ffe08e34928428f9d30fbbd9605b385 | 619,328,010,968,891,400 | <344244<3 | 02/18/2022 16:45:26 | just making sure | 1 | 0 | null | null | null | null | null | |||||
760 | help-10 | 6ffe08e34928428f9d30fbbd9605b385 | 619,328,010,968,891,400 | <344244<3 | 02/18/2022 16:46:10 | yea it correct | 1 | 0 | null | null | null | null | null | |||||
760 | help-10 | 6ffe08e34928428f9d30fbbd9605b385 | 619,328,010,968,891,400 | <344244<3 | 02/18/2022 16:49:17 | .close | 1 | 0 | null | null | null | null | null | |||||
761 | help-10 | 9e7a6bc0ddc649d8878757b087a50587 | 740,047,552,967,082,000 | A Kid Named Galois | 02/18/2022 17:12:56 | .close | 1 | 0 | null | null | null | null | null | |||||
762 | help-10 | ce636efee278499c9c3b09e95316f881 | 456,226,577,798,135,800 | Deleted User | 02/18/2022 17:42:49 | can someone tell me what the remainder of -30/7 is? im having a brain fart | 1 | 0 | null | null | null | null | null | |||||
762 | help-10 | ce636efee278499c9c3b09e95316f881 | 485,903,210,272,391,200 | dldh06 | 02/18/2022 18:00:19 | You can use a calculator | 0 | 1 | null | null | null | null | null | |||||
762 | help-10 | ce636efee278499c9c3b09e95316f881 | 456,226,577,798,135,800 | Deleted User | 02/18/2022 18:07:24 | smart | 1 | 0 | null | null | null | null | null | |||||
762 | help-10 | ce636efee278499c9c3b09e95316f881 | 456,226,577,798,135,800 | Deleted User | 02/18/2022 18:07:25 | .close | 1 | 0 | null | null | null | null | null | |||||
763 | help-10 | 3cde03ab83304fd0918168cb412a8897 | 407,185,869,930,233,860 | Intisaurus | 02/18/2022 18:10:17 | can someoen help me out with this | unknown.png | 1 | 0 | null | null | null | null | null | ||||
763 | help-10 | 3cde03ab83304fd0918168cb412a8897 | 261,933,205,387,477,000 | riemann | 02/18/2022 18:13:12 | which one | 0 | 1 | null | null | null | null | null | |||||
763 | help-10 | 3cde03ab83304fd0918168cb412a8897 | 261,933,205,387,477,000 | riemann | 02/18/2022 18:13:43 | 1st one's a well known problem | 0 | 1 | 551,807,466,631,987,200 | Mat | 9616 | Mat | false | |||||
763 | help-10 | 3cde03ab83304fd0918168cb412a8897 | 261,933,205,387,477,000 | riemann | 02/18/2022 18:13:43 | https://math.stackexchange.com/questions/755780/is-a-matrix-a-with-an-eigenvalue-of-0-invertible | 0 | 1 | null | null | null | null | null | |||||
763 | help-10 | 3cde03ab83304fd0918168cb412a8897 | 407,185,869,930,233,860 | Intisaurus | 02/18/2022 18:33:13 | all 3 preferably, I just looked at that mathexchange link and undertand 1 now | 1 | 0 | null | null | null | null | null | |||||
763 | help-10 | 3cde03ab83304fd0918168cb412a8897 | 569,167,697,925,898,240 | Camilleone | 02/18/2022 19:10:10 | For the second, as a hint, consider the characteristic polynomial | 0 | 1 | null | null | null | null | null | |||||
763 | help-10 | 3cde03ab83304fd0918168cb412a8897 | 295,654,938,741,309,440 | M8732 | 02/18/2022 19:41:14 | I don't think you need full characteristic polynomial? | 0 | 1 | null | null | null | null | null | |||||
763 | help-10 | 3cde03ab83304fd0918168cb412a8897 | 295,654,938,741,309,440 | M8732 | 02/18/2022 19:41:47 | My hint: Determinants | 0 | 1 | null | null | null | null | null | |||||
763 | help-10 | 3cde03ab83304fd0918168cb412a8897 | 407,185,869,930,233,860 | Intisaurus | 02/18/2022 20:03:43 | yea i dont really understand what to do with the hints :NervousSweat: | 1 | 0 | null | null | null | null | null | |||||
763 | help-10 | 3cde03ab83304fd0918168cb412a8897 | 295,654,938,741,309,440 | M8732 | 02/18/2022 20:20:41 | More hint: det(AB) = det(A)det(B) | 0 | 1 | 456,226,577,798,135,800 | Deleted User | 0000 | Deleted User | false | |||||
763 | help-10 | 3cde03ab83304fd0918168cb412a8897 | 186,109,587,366,215,680 | Omegabet_ | 02/18/2022 20:52:11 | Gershgorin Theorem :sotrue: | 0 | 1 | 485,903,210,272,391,200 | dldh06 | 2659 | dldh06 | false | |||||
763 | help-10 | 3cde03ab83304fd0918168cb412a8897 | 761,155,030,513,352,700 | Bungo | 02/18/2022 21:34:59 | Maybe more simply for the second, let $k$ be the smallest positive integer such that $A^k = 0$. If $A$ is invertible then you can multiply both sides by $A^{-1}$ and conclude what? | 0 | 1 | null | null | null | null | null | |||||
763 | help-10 | 3cde03ab83304fd0918168cb412a8897 | 510,789,298,321,096,700 | TeXit | 02/18/2022 21:35:02 | **OurBelovedBungo** | 761155030513352705.png | 0 | 1 | null | null | null | null | null | ||||
763 | help-10 | 3cde03ab83304fd0918168cb412a8897 | 761,155,030,513,352,700 | Bungo | 02/18/2022 21:36:36 | For the third, you can find the inverse to prove it's invertible. Hint, by analogy consider that $\frac{1}{1-x}$ is a closed-form expression for the series $\sum_{n=0}^{\infty}x^n$. | 0 | 1 | null | null | null | null | null | |||||
763 | help-10 | 3cde03ab83304fd0918168cb412a8897 | 510,789,298,321,096,700 | TeXit | 02/18/2022 21:36:39 | **OurBelovedBungo** | 761155030513352705.png | 0 | 1 | null | null | null | null | null | ||||
764 | help-10 | d5dfad5a07e44ca788415809348bdf5f | 888,697,909,397,319,700 | Lord Aizen | 02/19/2022 00:41:49 | 1 | 0 | null | null | null | null | null | ||||||
764 | help-10 | d5dfad5a07e44ca788415809348bdf5f | 701,895,792,763,600,900 | s_chanch | 02/19/2022 00:55:25 | consider the ways you can write 11 as the sum of two one digit numbers | 0 | 1 | 261,933,205,387,477,000 | riemann | 2529 | riemann | false | |||||
765 | help-10 | 285e03a62af34f5398b00f3f4cf74798 | 290,592,478,904,582,140 | halflife | 02/19/2022 03:10:14 | dt[r(t) × r(t)] = 0 is not possible. We know dt(r(t)) can't equal to 0 because r'(t) is a tangent vector at the point corresponding to r(t) | 1 | 0 | null | null | null | null | null | |||||
765 | help-10 | 285e03a62af34f5398b00f3f4cf74798 | 290,592,478,904,582,140 | halflife | 02/19/2022 03:59:29 | @Helpers | 1 | 0 | null | null | null | null | null | |||||
765 | help-10 | 285e03a62af34f5398b00f3f4cf74798 | 761,155,030,513,352,700 | Bungo | 02/19/2022 04:01:56 | r(t) x r(t) is always zero. I'm not sure what the notation dt[r(t) x r(t)] means. | 0 | 1 | null | null | null | null | null | |||||
765 | help-10 | 285e03a62af34f5398b00f3f4cf74798 | 290,592,478,904,582,140 | halflife | 02/19/2022 04:03:01 | Derivative r(t) | 1 | 0 | null | null | null | null | null | |||||
765 | help-10 | 285e03a62af34f5398b00f3f4cf74798 | 290,592,478,904,582,140 | halflife | 02/19/2022 04:03:03 | My bad | 1 | 0 | null | null | null | null | null | |||||
765 | help-10 | 285e03a62af34f5398b00f3f4cf74798 | 761,155,030,513,352,700 | Bungo | 02/19/2022 04:03:26 | Did you mean dt[r(t)] x r(t) instead of dt[r(t) x r(t)] ? | 0 | 1 | null | null | null | null | null | |||||
765 | help-10 | 285e03a62af34f5398b00f3f4cf74798 | 761,155,030,513,352,700 | Bungo | 02/19/2022 04:03:48 | Because the second one is definitely zero | 0 | 1 | null | null | null | null | null | |||||
765 | help-10 | 285e03a62af34f5398b00f3f4cf74798 | 290,592,478,904,582,140 | halflife | 02/19/2022 04:03:51 | Dt[r(t)xr(t)] | 1 | 0 | null | null | null | null | null | |||||
765 | help-10 | 285e03a62af34f5398b00f3f4cf74798 | 761,155,030,513,352,700 | Bungo | 02/19/2022 04:04:11 | r(t) x r(t) itself is identically zero, so its derivative is also zero. | 0 | 1 | null | null | null | null | null | |||||
765 | help-10 | 285e03a62af34f5398b00f3f4cf74798 | 290,592,478,904,582,140 | halflife | 02/19/2022 04:04:35 | But I thought r'(t) can't equal to 0? | 1 | 0 | null | null | null | null | null | |||||
765 | help-10 | 285e03a62af34f5398b00f3f4cf74798 | 761,155,030,513,352,700 | Bungo | 02/19/2022 04:04:54 | How does r'(t) relate to this? | 0 | 1 | null | null | null | null | null | |||||
765 | help-10 | 285e03a62af34f5398b00f3f4cf74798 | 290,592,478,904,582,140 | halflife | 02/19/2022 04:05:19 | How do you prove it then? | 1 | 0 | null | null | null | null | null | |||||
765 | help-10 | 285e03a62af34f5398b00f3f4cf74798 | 761,155,030,513,352,700 | Bungo | 02/19/2022 04:05:31 | Prove what? What is the problem statement? | 0 | 1 | null | null | null | null | null | |||||
765 | help-10 | 285e03a62af34f5398b00f3f4cf74798 | 290,592,478,904,582,140 | halflife | 02/19/2022 04:06:14 | Prove derivative [r(t) cross product r(t)] = 0 | 1 | 0 | null | null | null | null | null | |||||
765 | help-10 | 285e03a62af34f5398b00f3f4cf74798 | 761,155,030,513,352,700 | Bungo | 02/19/2022 04:06:59 | Like I said, [r(t) cross product r(t)] itself is always zero (the cross product of any vector with itself is zero). So of course its derivative is also zero. | 0 | 1 | null | null | null | null | null | |||||
765 | help-10 | 285e03a62af34f5398b00f3f4cf74798 | 290,592,478,904,582,140 | halflife | 02/19/2022 04:09:13 | But the textbook says r'(t) doesn't equal to 0? | 1 | 0 | null | null | null | null | null | |||||
765 | help-10 | 285e03a62af34f5398b00f3f4cf74798 | 290,592,478,904,582,140 | halflife | 02/19/2022 04:09:15 | Screenshot_20220219-040838_Pearson.jpg | 1 | 0 | null | null | null | null | null | |||||
765 | help-10 | 285e03a62af34f5398b00f3f4cf74798 | 761,155,030,513,352,700 | Bungo | 02/19/2022 04:09:32 | I don't understand why you think the two facts are a contradiction. | 0 | 1 | null | null | null | null | null | |||||
765 | help-10 | 285e03a62af34f5398b00f3f4cf74798 | 761,155,030,513,352,700 | Bungo | 02/19/2022 04:09:52 | Why would dt[r(t) x r(t)] = 0 imply that r'(t) is zero? | 0 | 1 | null | null | null | null | null | |||||
765 | help-10 | 285e03a62af34f5398b00f3f4cf74798 | 761,155,030,513,352,700 | Bungo | 02/19/2022 04:10:06 | r'(t) can be anything | 0 | 1 | null | null | null | null | null | |||||
765 | help-10 | 285e03a62af34f5398b00f3f4cf74798 | 761,155,030,513,352,700 | Bungo | 02/19/2022 04:10:45 | Moreover, the textbook doesn't say that r'(t) is nonzero, it says PROVIDED that it is nonzero, then r'(t) is called a tangent vector. | 0 | 1 | null | null | null | null | null | |||||
765 | help-10 | 285e03a62af34f5398b00f3f4cf74798 | 290,592,478,904,582,140 | halflife | 02/19/2022 04:15:12 | Okay thanks you. | 1 | 0 | null | null | null | null | null | |||||
765 | help-10 | 285e03a62af34f5398b00f3f4cf74798 | 290,592,478,904,582,140 | halflife | 02/19/2022 04:15:36 | I feel like I understand now. | 1 | 0 | null | null | null | null | null |
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