18,116 reputation
21438
bio website
location Slovenia
age
visits member for 10 months
seen 6 hours ago

1d
comment Are there definition of percent?
@thinker Why would it be weird? Just think of $\%$ as a number, so $\%$ is just a symbol you use to denote $\frac1{100}$. Now, saying $100\%$ is the multiplicative identity of $\mathbb R$ is completely rational.
1d
revised Are there definition of percent?
edited body
1d
answered Are there definition of percent?
1d
answered In f:A→B, surely A and B are redundant
1d
comment Proving that Poisson distribution is well-defined
The distribution takes integer values including $0$.
2d
answered Textbook clarification: $\log = \ln$
2d
comment Two math professors problem
@LLawliet Unfortunatelly, that is exactly what I think, yes. I see no way in which a nicer solution can be obtained. I may be wrong, of course.
2d
answered Two math professors problem
2d
comment Solve complex equation $z^3 = i$
OP did do that. He is asking what he did wrong.
2d
answered Solve complex equation $z^3 = i$
2d
comment $f\left(x + \frac1x\right)= x^3+x^{-3},$ find $f(x)$
Hi and welcome to the site! Since this is a site that encourages learning, you will get much more help if you show us what you have already done. Could you edit your question with your thoughts and ideas?
2d
revised $f\left(x + \frac1x\right)= x^3+x^{-3},$ find $f(x)$
added 20 characters in body
2d
answered Finding the closed form of a multiplicative function
2d
answered How do I decide what problems and how many problems to do when I try to self study?
2d
answered complex subsequences of divergent sequence
2d
answered Prove: If $T(u+kv) = T(u) + kT(v)$ then $T$ is linear
2d
comment Using unbounded derivative to show function is not uniformly convergent
@Zslice Look at the last paragraph I wrote.
2d
comment Show that $(g\circ f)':[a,b] \to R$ is differentiable and find the derivative. (Chain Rule Proof)
@jlang That's precisely it. You can think of doing all these operations on every point in the domain.
2d
comment Show that $(g\circ f)':[a,b] \to R$ is differentiable and find the derivative. (Chain Rule Proof)
@jlang There you go! Now you just need to calculate the derivative of $(g\circ f)'$.
2d
answered Show that $(g\circ f)':[a,b] \to R$ is differentiable and find the derivative. (Chain Rule Proof)