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I'm a Software Designer here to learn just as much as I am to help others learn.


Jul
16
revised How to calculate component amounts so their individual additives equal 3%
explanation
Jul
16
answered How to calculate component amounts so their individual additives equal 3%
Jul
16
revised What is the name of this operator property, when the result of operation is one of the operands?
added 62 characters in body
Jul
16
revised What is the name of this operator property, when the result of operation is one of the operands?
deleted 63 characters in body
Jul
16
answered What is the name of this operator property, when the result of operation is one of the operands?
Jul
14
answered The range of function in Discrete Math
Jul
14
comment Find an expression that represents how a student should save to get her car.
What have you tried?
Jul
10
awarded  Commentator
Jul
10
comment Probablity that 3 husbands sit next to their wives round a circular table
Looks reasonable to me.
Jul
9
answered Simple Trig Question / Introduction to Vectors Question
Jul
9
comment Logarithm with variable base
If you're just working with real numbers, then I think your domain is restricted to $u > 0$, $x > 0$, and $x \neq 1$ ($x^3$ must be positive and $\log x^3$ must be nonzero because it is in the denominator). I think it's also valid to have $u = x^3$ even when $u$ and $x^3$ are negative.
Jul
8
answered Logarithm with variable base
Jul
8
comment Logarithm with variable base
Use \mathbb{Z} for blackboard bold Z.
Jul
8
comment Finding expected value??
This site isn't here to do your homework for you. We're here to help point you in the right direction if you're genuinely confused, but that's not the same as doing everything.
Jul
8
answered Finding expected value??
Jul
7
awarded  Critic
Jul
7
suggested suggested edit on Mathematical Identity
Jul
7
comment indefinite integral computation $dx/(e^{-x}-x)$
It should be exact if you take infinitely many terms. Some functions simply don't have indefinite integrals expressible in terms of standard functions.
Jul
7
awarded  Yearling
Jul
7
revised Length of a curve without function?
added 2 characters in body