Threads Tagged with identities Thread / Thread Starter Last Post Replies Views If I have some new identities that are very powerful but don't have time to go into the details is it okay to simply... Mar2-14 08:35 AM mesa 17 661 General Discussion I have a hard time believing we only have the limited number of series I have seen so far especially considering how... Mar1-14 05:29 PM mesa 16 342 General Math Anybody think this identity is not super-cool? \begin{eqnarray} \frac {1} {1-x} = (1+x) \prod_{n=1} ^{\infty} ... Feb26-14 04:46 PM ClamShell 9 311 General Math 1. The problem statement, all variables and given/known data prove using the compound angle identies, proove the... Feb20-14 04:17 AM Mentallic 2 162 Precalculus Mathematics Homework 1. The problem statement, all variables and given/known data If ##\sec x-\csc x=\pm p##, show that ##p^{2} \sin^2 2x... Feb7-14 08:28 PM haruspex 8 284 Precalculus Mathematics Homework Found out that: 1/(1-x) = the infinite product of (1+x^(2^N)) from N=0 to infinity. From "The Harper Collins... Feb3-14 07:06 AM maajdl 5 332 Differential Equations Hello, i'm fairly sure that what I have done is wrong/not allowed, but I want to check because it seemed like a... Jan14-14 12:19 AM Mark44 8 420 Precalculus Mathematics Homework In chapter 20 of "Foundations of Electromagnetic theory" by Reitz,Milford and Christy,there is calculation which seems... Dec18-13 03:26 AM qbert 2 529 Calculus Hello there, I am struggling in proving the following. The principle of Minimum energy for an elastic body (no... Nov11-13 09:27 AM muzialis 1 390 Calculus I need some help just understanding notation, and while this might count as elementary it has to do with Hamiltonians... Nov4-13 05:53 AM Emspak 12 343 Advanced Physics Homework 1. The problem statement, all variables and given/known data We are given two sets of functions: sin(x) and cos(x);... Oct27-13 07:12 PM Persimmon 4 289 Calculus & Beyond Homework hey all! i was hoping someone could either state an article or share some knowledge with a way (if any) to derive... Oct12-13 12:40 AM joshmccraney 3 554 Calculus Does anyone know if there is a good place to find a list of proof identities? Basic stuff like the disjoint or if-then... Sep25-13 07:17 PM Stickybees 1 576 Set Theory, Logic, Probability, Statistics 1. The problem statement, all variables and given/known data How to quickly solve problems on maximum and minimum... Sep25-13 09:17 AM nil1996 2 488 Calculus & Beyond Homework I am having trouble establishing a process to verify various identities for problems in index notation. Description... Sep12-13 07:43 PM WannabeNewton 15 635 Calculus & Beyond Homework I'm having some confusion with a couple trig identities. On wikipedia... Jul9-13 09:39 PM Ackbeet 3 430 General Math 1. The problem statement, all variables and given/known data I want to derive the trig identities starting with... Jul9-13 01:14 PM szynkasz 8 411 Precalculus Mathematics Homework I can find for example Tan(2x) by using Euler's formula for example Let the complex number Z be equal to 1 +... Jul3-13 06:04 AM epenguin 5 409 Calculus & Beyond Homework 1. The problem statement, all variables and given/known data Prove the following identities 31c)... Jul1-13 01:47 PM Mark44 6 502 Precalculus Mathematics Homework 1. The problem statement, all variables and given/known data Prove that the two trig identities are equivalent. ... Jun30-13 12:14 AM QuantumCurt 12 548 Precalculus Mathematics Homework 1. The problem statement, all variables and given/known data Determine the general solution of: y(6) + y''' = t ... Jun28-13 12:08 PM tolove 13 561 Calculus & Beyond Homework Given: A + B + C = 180 degrees Prove: TanA + TanB + TanC = TanA x TanB x TanC First time submitting... Jun19-13 09:04 AM kevinj888 3 302 Precalculus Mathematics Homework Hi everybody, I am just trying to find a decent identity that relates the sum $$\sum_{k=0}^{n}a_kb_k$$ to another sum... May12-13 04:35 PM tiny-tim 6 545 General Math 1. The problem statement, all variables and given/known data Proof that (1/6)sin(3x)-(1/18)sin(9x) = (2/9)sin^3(3x) ... Apr29-13 12:40 AM Mark44 3 379 Precalculus Mathematics Homework 1. The following integral identity holds... Apr27-13 01:31 AM jarvisyang 4 742 Calculus HI, does anyone know a decent site where I can find a few product identities? I googled it, but all that came up were... Apr8-13 09:36 PM eddybob123 4 697 General Math 1. The problem statement, all variables and given/known data I understand this chapter a little better than the... Mar21-13 09:39 AM SammyS 3 439 Precalculus Mathematics Homework 1. The problem statement, all variables and given/known data Use the figure to evaluate the function that... Mar15-13 05:16 AM eumyang 10 525 Precalculus Mathematics Homework 1. The problem statement, all variables and given/known data Prove the following: tan2A=2tanA/1-tan^2A 2.... Mar11-13 04:10 PM Dick 1 413 Precalculus Mathematics Homework 1. The problem statement, all variables and given/known data If A and B are events, use the axioms of probability... Mar7-13 07:11 PM phosgene 2 483 Calculus & Beyond Homework 1. The problem statement, all variables and given/known data I just have to prove the well known identities:... Feb23-13 03:51 PM joshmccraney 7 544 Calculus & Beyond Homework 1. The problem statement, all variables and given/known data a) Derive Green's identities in local and integral form... Feb14-13 01:45 PM TaPaKaH 1 442 Calculus & Beyond Homework Hi im in need of some help for this question: 1+tanx/1-tanx = tan(x+(∏/4)) It is easy to solve with the tan trig... Dec6-12 03:43 PM Mark44 6 815 General Math cos θ = 24/25 The angle lies in quadrant 1; 0<θ<90 Find sin2θ I know you would use either the formula... Nov28-12 07:09 AM lurflurf 2 499 Precalculus Mathematics Homework 1. The problem statement, all variables and given/known data A travelling wave f(x,t) = ei(kx -wt). Show that the... Nov18-12 07:40 PM haruspex 1 597 Advanced Physics Homework Hey PF! 1. The problem statement, all variables and given/known data Find exact solutions for the following... Nov10-12 06:24 PM trulyfalse 2 684 Precalculus Mathematics Homework Sorry for the format, I'm on my phone. Lets say the matrix is | 1 1 1 | | a b c | | a^2 b^2 c^| Or ... Oct24-12 01:57 PM AlephZero 2 862 Linear & Abstract Algebra I was wondering if someone can show me or point me to a worked out example using integration by parts for more than... Oct22-12 10:19 PM ericm1234 0 765 Differential Equations Apparently our professor expects us to know these half-angle identities ... Oct6-12 01:13 PM HallsofIvy 4 587 Calculus & Beyond Homework 1. The problem statement, all variables and given/known data I need to prove the identity: (a×b)\cdot(c×d)=... Sep28-12 10:21 PM jtleafs33 6 2,151 Calculus & Beyond Homework