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 Mar31 awarded Custodian Mar31 reviewed Approve Find Where the Function $3x^4-4x^3-12x^2+5$ is Increasing and Decreasing Mar31 answered Find Where the Function $3x^4-4x^3-12x^2+5$ is Increasing and Decreasing Feb13 accepted How many 5-character passwords can be made from 5 characters with joins? Feb13 comment How many 5-character passwords can be made from 5 characters with joins? Thanks. Is the total therefore 3125 + 5000 + 6000/4 = 9625? Feb13 accepted What is probability that a sample covers all classes? Feb13 answered What is probability that a sample covers all classes? Feb1 awarded Yearling Jan31 comment what does $p(-1) = 0$ mean? is there a function p(x) defined anywhere else in the question? Jan26 awarded Popular Question Jan24 answered find a vector with certain magnitude that is parallel to another vector Jan24 comment Proving that an infinite sum of irrationals is irrational As currently phrased, the 'an' in your question looks like you are asking 'is every sum of irrationals irrational'. Answer no as Pp has shown. If you are asking about a particular set of irrationals then please say what they are. Jan24 comment An Elementary Convergence Problem in Probability Do the density functions integrate to 0? Do they need to be delta functions to integrate to 1? Jan3 comment what $A$ makes $X$ in $\dot{X}=-AX$ converge? Yes, because the matrix X can be treated as n separate n x 1 vectors Jan3 comment what $A$ makes $X$ in $\dot{X}=-AX$ converge? Dec24 answered Can Point inside quad be determined with angles alone? Dec24 comment Can Point inside quad be determined with angles alone? ?? typo ∠CGB+∠BGE+∠EGD=180 Dec24 comment How many 5-character passwords can be made from 5 characters with joins? @sashasami Thank you Dec24 revised How many 5-character passwords can be made from 5 characters with joins? added 2 characters in body Dec24 asked How many 5-character passwords can be made from 5 characters with joins?