Caculating integral with binomial coefficient

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SUMMARY

The integral of the function \(\int^{0}_{1} nCy \, x^{y} (1-x)^{n-y} \, dx\) is evaluated using the properties of the beta function. The expression simplifies to \(\left(nCy\right) \int^{0}_{1} x^{y} (1-x)^{n-y} \, dx\), confirming its relationship with the beta function. This integral is crucial for understanding binomial coefficients in probability and combinatorial contexts.

PREREQUISITES
  • Understanding of binomial coefficients (nCy)
  • Familiarity with integral calculus
  • Knowledge of beta functions
  • Basic concepts of probability theory
NEXT STEPS
  • Study the properties of the beta function and its applications
  • Explore the relationship between binomial coefficients and integrals
  • Learn about the Gamma function and its connection to beta functions
  • Investigate applications of integrals in probability distributions
USEFUL FOR

Students in mathematics, particularly those studying calculus and probability, as well as researchers interested in combinatorial mathematics and statistical applications.

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Homework Statement





Homework Equations


What is the integral of

\int^{0}_{1} nCy x^{y} (1-x)^{n-y} dx ?


The Attempt at a Solution


\left(nCy\right) \int^{0}_{1} x^{y} (1-x)^{n-y} dx
 
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It looks like a beta function to me.
 


Dick said:
It looks like a beta function to me.

Thank you for your good idea Dick! =)
 

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