Threads Tagged with identities Thread / Thread Starter Last Post Replies Views Forum Hello there, I am struggling in proving the following. The principle of Minimum energy for an elastic body (no... Nov11-13 10:27 AM muzialis 1 318 Calculus I need some help just understanding notation, and while this might count as elementary it has to do with Hamiltonians... Nov4-13 06:53 AM Emspak 12 241 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 08:12 PM Persimmon 4 197 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 01:40 AM joshmccraney 3 461 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 08:17 PM Stickybees 1 450 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 10:17 AM nil1996 2 430 Calculus & Beyond Homework I am having trouble establishing a process to verify various identities for problems in index notation. Description... Sep12-13 08:43 PM WannabeNewton 15 492 Calculus & Beyond Homework I'm having some confusion with a couple trig identities. On wikipedia... Jul9-13 10:39 PM Ackbeet 3 377 General Math 1. The problem statement, all variables and given/known data I want to derive the trig identities starting with... Jul9-13 02:14 PM szynkasz 8 320 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 07:04 AM epenguin 5 366 Calculus & Beyond Homework 1. The problem statement, all variables and given/known data Prove the following identities 31c)... Jul1-13 02:47 PM Mark44 6 429 Precalculus Mathematics Homework 1. The problem statement, all variables and given/known data Prove that the two trig identities are equivalent. ... Jun30-13 01:14 AM QuantumCurt 12 462 Precalculus Mathematics Homework 1. The problem statement, all variables and given/known data Determine the general solution of: y(6) + y''' = t ... Jun28-13 01:08 PM tolove 13 420 Calculus & Beyond Homework Given: A + B + C = 180 degrees Prove: TanA + TanB + TanC = TanA x TanB x TanC First time submitting... Jun19-13 10:04 AM kevinj888 3 261 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 05:35 PM tiny-tim 6 484 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 01:40 AM Mark44 3 328 Precalculus Mathematics Homework 1. The following integral identity holds... Apr27-13 02:31 AM jarvisyang 4 679 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 10:36 PM eddybob123 4 593 General Math 1. The problem statement, all variables and given/known data I understand this chapter a little better than the... Mar21-13 10:39 AM SammyS 3 390 Precalculus Mathematics Homework 1. The problem statement, all variables and given/known data Use the figure to evaluate the function that... Mar15-13 06:16 AM eumyang 10 428 Precalculus Mathematics Homework 1. The problem statement, all variables and given/known data Prove the following: tan2A=2tanA/1-tan^2A 2.... Mar11-13 05:10 PM Dick 1 347 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 08:11 PM phosgene 2 379 Calculus & Beyond Homework 1. The problem statement, all variables and given/known data I just have to prove the well known identities:... Feb23-13 04:51 PM joshmccraney 7 435 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 02:45 PM TaPaKaH 1 374 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 04:43 PM Mark44 6 775 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 08:09 AM lurflurf 2 460 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 08:40 PM haruspex 1 525 Advanced Physics Homework Hey PF! 1. The problem statement, all variables and given/known data Find exact solutions for the following... Nov10-12 07:24 PM trulyfalse 2 618 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 02:57 PM AlephZero 2 809 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 11:19 PM ericm1234 0 715 Differential Equations Apparently our professor expects us to know these half-angle identities ... Oct6-12 02:13 PM HallsofIvy 4 523 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 11:21 PM jtleafs33 6 1,749 Calculus & Beyond Homework Does anyone know of websites where I can find many problems on the topic in the title line (my textbook has far too... Sep23-12 01:12 PM NasuSama 1 1,120 Science & Math Textbooks Is this identity possible? cot 2x = \frac{cos3x + cosx}{sin 3x + sinx} Thanks! Aug31-12 09:18 PM uart 8 968 General Math 1. The problem statement, all variables and given/known data Verify that \frac{cosθ}{1-tanθ} + \frac{sinθ}{1-cotθ} =... Aug29-12 09:41 AM Simon Bridge 13 697 Precalculus Mathematics Homework 1. The problem statement, all variables and given/known data Prove that sin6 + cos6 = 1 - 3sin2cos2 2.... Aug28-12 10:52 AM Mentallic 5 657 Precalculus Mathematics Homework 1. The problem statement, all variables and given/known data The two vectors a and b lie in the xy plane and make... Aug26-12 06:02 PM SammyS 6 1,245 Calculus & Beyond Homework 1. The problem statement, all variables and given/known data The two vectors a and b lie in the xy plane and make... Aug26-12 02:55 PM cytochrome 6 815 Introductory Physics Homework 1. The problem statement, all variables and given/known data Prove that: (1-tanθ)/(1+tanθ)=(cotθ-1)/(cotθ+1) ... Aug25-12 04:00 AM Millennial 6 648 Precalculus Mathematics Homework Hello, Say I'm working with ∫ sqrt(1-cos(t)) dt I end up with a substitution of u = 1-cos(t) and dt = du/sin(t)... Aug15-12 02:16 AM Simon Bridge 7 775 Calculus