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The Dirichlet Integral is destroyed by Feynman's Trick

Dr. Trefor Bazett 168,579 lượt xem 1 year ago
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The Dirichlet integral (integral from 0 to infinity of the sin(x)/x also know as the sinc function), is typically not taught in first year calculus courses. But the trick to solve it is actually pretty easy! In this video I show how we can use Feynman's Trick to make it a big messier by including a new exponential factor, but by differentiating under the integral sign the messy x in the denominator gets cleaned right up.

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