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# 28 Actions

 Apr18 accepted Is there a name for this modified newton's method? Apr13 asked Is there a name for this modified newton's method? Apr9 asked Deeply confused while trying to understand the derivation of infinite product representation of gamma function Dec4 awarded Teacher Dec4 answered Formal proof for $\lim_{x\to\infty}x\exp(-x) =0$ Dec1 awarded Tumbleweed Nov24 asked What theorems are used in this following proof of derivatives of log normalizer is moments of sufficient statistics? Nov21 accepted Gamma function identity used in deriving negative binomial from gamma-poisson mixture Nov21 asked Gamma function identity used in deriving negative binomial from gamma-poisson mixture Sep1 accepted Proving that the exponential function is its own derivative, using the limit definition of $e$ Aug30 comment Proving that the exponential function is its own derivative, using the limit definition of $e$ Woops! that's right. Thank you for pointing that out and making corrections. Aug30 asked Proving that the exponential function is its own derivative, using the limit definition of $e$ Dec21 accepted Why are orthogonal matrices generalizations of rotations and reflections? Dec19 asked Why are orthogonal matrices generalizations of rotations and reflections? Dec8 accepted In the process of proving Sum of Geometric Progression Dec7 comment In the process of proving Sum of Geometric Progression Just corrected the mistake! My confusion comes from $\sum_{j=0}^{n-1}{x^j}=x^0+\sum_{j=1}^{n-1}{x^j}$...I still don't see why this is the case Dec7 awarded Editor Dec7 revised In the process of proving Sum of Geometric Progression edited body Dec7 asked In the process of proving Sum of Geometric Progression Nov4 accepted Formal proof for $\lim_{x\to\infty}x\exp(-x) =0$