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Apr
20
asked How to show that $0<b'<b$?
Apr
16
asked Why $-1 \leq\frac{\langle A,B\rangle}{||A||\, ||B||}\leq1$?
Apr
15
asked About the differentiability of $|x|$?
Apr
12
asked Prove that $(A,B)\sim(P,Q)$ and $(C,D)\sim (P,Q)\implies (A,B)\sim (C,D)$?
Apr
4
asked Equations of the tangent lines of $y=x^4$ at the point $(2,0)$?
Apr
3
asked What is the meaning of division for quasigroups in here?
Apr
3
asked Determine the equation of the tangent line to $P=(x_0,x_0^4)$ in $y=x^4$.
Apr
2
asked How to show that $\frac{-1}{x^2}=0$ has no solutions?
Apr
2
asked A question on the proof of commutativity of the sum of natural numbers?
Apr
1
asked Are there two meanings to induction?
Mar
26
answered Identify the subset of the plane composed by $R\cos \theta=5$ by means of polar coordinates $R,\theta$?
Mar
25
asked Identify the subset of the plane composed by $R\cos \theta=5$ by means of polar coordinates $R,\theta$?
Mar
23
asked The triangle $ABC$ with points $A=(-a,0)$; $B=(a,0)$ $C=(0,y)$ is equilateral. What are the possible values of $y$?
Mar
16
asked Help on Apostol's explanation of Archimedes method?
Mar
15
asked Suplement books for calculus course?
Feb
23
asked How to solve this distribution problem with generating functions?
Feb
17
asked On the calculus of recurrence relations using generating functions?
Feb
16
asked In how many ways can we distribute $11$ oranges and $6$ pears to $3$ kids, such that each kid gets at least $3$ orange and a maximum of $2$ pears?
Feb
16
asked $4$ judges must distribute grades from $1$ to $6$ for each participant. In how many ways one can score $22$ points?
Feb
16
asked Is it possible to represent any sequence as the coefficients of arbitrary generating functions?