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Why does scipy.special.factorial(n) differ from scipy.special.gamma(n+1) for non-integer n?

hard📝 Conceptual Q10 of 15
SciPy - Constants and Special Functions
Why does scipy.special.factorial(n) differ from scipy.special.gamma(n+1) for non-integer n?
Afactorial only supports integers; gamma supports real numbers
Bgamma is slower than factorial for integers
Cfactorial returns floats; gamma returns integers
DBoth functions behave identically for all inputs
Step-by-Step Solution
Solution:
  1. Step 1: Understand domain of factorial

    factorial function is defined for non-negative integers only.
  2. Step 2: Understand gamma function domain

    Gamma function extends factorial to real and complex numbers except negative integers.
  3. Step 3: Compare behavior for non-integers

    factorial does not support non-integers; gamma does, so they differ.
  4. Final Answer:

    factorial only supports integers; gamma supports real numbers -> Option A
  5. Quick Check:

    factorial integer-only, gamma real-valued [OK]
Quick Trick: Gamma extends factorial to real numbers; factorial is integer-only [OK]
Common Mistakes:
MISTAKES
  • Assuming factorial works for floats
  • Thinking gamma returns integers
  • Believing both behave identically always

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