Indefinite Integral of e raised to a negative fraction

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SUMMARY

The discussion focuses on finding the constant, c, that satisfies the equation 1 = c ∫ e^(-|x|/2) dx from -infinity to infinity. The solution provided indicates that c = 1/4. To derive this, one must compute the integral of e^(-|x|/2) from 0 to infinity, which simplifies the absolute value, and then compare it with the integral from -infinity to 0. This approach confirms the value of c through proper evaluation of the definite integrals.

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Homework Statement


Find the constant, c, that satisfies the following equation:


Homework Equations


The integral is from -infinity to infinity

1 = c \int e ^ -|x|/2 *dx

The Attempt at a Solution



c = 1/4

I have the solution given to me, but I do not understand how to get the steps to the answer.
 
Physics news on Phys.org
Find the integral of e^(-|x|/2) from 0 to infinity (where you can drop the absolute value). Compare that with the integral of the same function from -infinity to 0.
 

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