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It emerges from a more general formula: Yowza -- we're relating an imaginary exponent to sine and cosine! And somehow plugging in pi gives -1?
Could this ever be intuitive? Not according to s mathematician Benjamin Peirce: It is absolutely paradoxical; we cannot understand it, and we don't know what it means, but we have proved it, and therefore we know it must be the truth. Argh, this attitude makes my blood boil! Formulas are not magical spells to be memorized: Euler's formula describes two equivalent ways to move in a circle.
This stunning equation is about spinning around? Yes -- and we can understand it by building on a few analogies: Starting at the number 1, see multiplication as a transformation that changes the number: If they can't think it through, Euler's formula is still a magic spell to them.
While writing, I thought a companion video might help explain the ideas more clearly: It follows the post; watch together, or at your leisure. Euler's formula is the latter: If we examine circular motion using trig, and travel x radians: The analogy "complex numbers are 2-dimensional" helps us interpret a single complex number as a position on a circle.
Now let's figure out how the e side of the equation accomplishes it. What is Imaginary Growth? Combining x- and y- coordinates into a complex number is tricky, but manageable. But what does an imaginary exponent mean? Let's step back a bit. When I see 34, I think of it like this: Regular growth is simple: Imaginary growth is different: It's like a jet engine that was strapped on sideways -- instead of going forward, we start pushing at 90 degrees.
The neat thing about a constant orthogonal perpendicular push is that it doesn't speed you up or slow you down -- it rotates you!Jun 08, · I'm aiming to encourage people to think carefully about what he is telling them.
I'm not out to discourage people from trying out any promising new ideas – what I want is to help people question what's out there for themselves.
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If they are not yet a customer, we will help them set up a new account so they can enjoy their course in their My Digital Library or via our free . This unit, Writing the Researched Paper, focuses specifically on writing about reading, things with readings rather than just passively registering the information contained in them.
Because analysis relies so heavily on reading, we address ways of negotiating what Sources Analytically—where you will find a set of strategies that. It is a commonplace of scientific discussion that correlation does not imply causation.
Business Week recently ran an spoof article pointing out some amusing examples of the dangers of inferring causation from correlation. For example, the article points out that Facebook’s growth has been strongly correlated with the yield on Greek government bonds: ().
Aug 31, · Writing Analytically: Chapter 2 Summary Posted on August 31, by aperry77 As we trudge through the next chapter of Writing Analytically with Readings, Rosenwasser and Stephen bestow upon us the next consecutive step in perfecting analytical writing; and this next step will be how to read analytically.
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