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Dec
15
awarded  Nice Answer
Oct
4
awarded  Yearling
Jan
16
comment Applications of Residue Theorem in complex analysis?
Hello, Welcome to math.SE. IMO one of the main use is to find integrals (i.e, contour integration). It is pretty important for finding real definite integrals also..Search for contour inegration would yielda lot of results.
Dec
3
revised Complex solutions of $\sin z = i \alpha \cos z$
explained the particular solution
Dec
3
comment Complex solutions of $\sin z = i \alpha \cos z$
put $z_0=i\alpha$ in the final answer.. it also gives you a very important onservation, if $\alpha = 1$ there is no solution.
Dec
3
answered Complex solutions of $\sin z = i \alpha \cos z$
Nov
18
revised In terms of complexity, is there a quicker way of checking if a matrix is nonsingular than computing the determinant?
added 919 characters in body
Nov
18
answered In terms of complexity, is there a quicker way of checking if a matrix is nonsingular than computing the determinant?
Nov
16
comment What is degree of freedom in statistics?
Degree of freedom for a prticle is the number of dimensions only if the motion is not constrained. For an example, consider a particle hanging down from ceiling with the help of a rigid rod, then degree of freedom is less than $3$, right?(it is actually $2$.). Any two independent parameters give all information about the position of particle. (Try to give position using two parameters). If you still have questions, ask. I'll be glad to help if I can..
Nov
15
comment Where does the Chi-square equation come from?
IMO chi squared, Student's t distribution, and F distribution, all are from nowhere, they are names given to some functions of random variables which originated during calculations, like in linear regression, ANOVA, etc.They are to some extent derived distributions as opposed to distributions like normal, etc
Nov
15
revised Where does the Chi-square equation come from?
added 480 characters in body
Nov
15
revised Where does the Chi-square equation come from?
added 480 characters in body
Nov
15
answered Where does the Chi-square equation come from?
Nov
15
revised Finding coefficients of quadratic given one tangent and point on the curve
added 389 characters in body
Nov
15
answered Finding coefficients of quadratic given one tangent and point on the curve
Nov
15
comment simplify natural logarithm
nope, you haven't seen real awesome ppl here yet.. welcome again here and have a nice time..
Nov
15
comment simplify natural logarithm
putting the values, we get,$\ln 3C = \ln 3$.Take out the log, then we get $3C=3 \iff C=1$.
Nov
15
revised What is degree of freedom in statistics?
added 11 characters in body
Nov
15
comment simplify natural logarithm
if you are satisfied, please consider accepting the answer. meta.math.stackexchange.com/questions/3399/…
Nov
15
answered What is degree of freedom in statistics?