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Nov
24
revised Prove existence
added 2 characters in body
Nov
24
answered Test the convergence of the integral $\int_{-\infty}^{\infty}\frac{e^{-x}}{1+x^2}.$
Nov
23
comment Prove limit superior of a sequence is greater than or equal to limit superior of the Cesàro mean of that sequence
Your proof cannot work, because if $x_n$ is decreasing you always have $(\sum_{i=0}^n x_n)/n > x^*$...
Nov
22
answered Supremum of a function
Nov
21
answered Meaning of $C^k$ in Taylor's expansion
Nov
20
revised General Solution to Differential Equation
added 17 characters in body; edited tags
Nov
18
answered Evaluate $\lim_{x \to 0} \left(\frac{ \sin x }{x} \right)^{\frac{1}{x^2}}$
Nov
18
revised How do you find the area of the shaded (gray) region of the square not getting overlapped by the circle or triangle
added 94 characters in body
Nov
18
revised How do you find the area of the shaded (gray) region of the square not getting overlapped by the circle or triangle
added 94 characters in body
Nov
17
comment Given an elementary set how to obtain an open elementary set containing it whose measure is less than a desired quantity
If you have a finite union of open intervals, if the intervals have intersection you can join them to obtain a disjoin union of open intervals.
Nov
17
revised How do you find the area of the shaded (gray) region of the square not getting overlapped by the circle or triangle
added 17 characters in body
Nov
17
revised How do you find the area of the shaded (gray) region of the square not getting overlapped by the circle or triangle
added 17 characters in body
Nov
17
answered How do you find the area of the shaded (gray) region of the square not getting overlapped by the circle or triangle
Nov
17
answered Which is the correct way to analyse balls drawn from an urn (with replacement)
Nov
17
comment A Matrix $A$ that $A^2$ is not I, but $A^4 = I$
What about rotations?
Nov
15
revised Is the minimum of two metrics is again a metric?
tex
Nov
11
comment Is $\gamma$ homotopic to $g\circ\gamma$?
I suppose that a simply connected space is also connected. In that case you can join the two starting and ending points with a continuous curve. Hence you assign the value of the homotopy $F$ on the boundary of $I\times I$. The function can then be extended on the interior by the definition of simply connectedness. If, instead, a simply connected space is not required to be connected, the statement is obviously false.
Nov
11
answered Is $\gamma$ homotopic to $g\circ\gamma$?
Nov
10
asked Is there a formula which gives the solutions of a general fifth grade equation by using trascendental functions?
Nov
8
comment Change of variables problem.
You want to plot the image of what? Please try to write a clear question.