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bio website math.ethz.ch/~blatter
location Switzerland
age 79
visits member for 4 years, 2 months
seen 22 mins ago

Oct
26
revised How can I evaluate this double integral by using geometry/symmetry?
edited body
Oct
26
answered If $f(x-1) +f(x+3) = f(x+1)+ f(x+5)$, find the period of $f(x)$.
Oct
26
revised Continuous differentiability of atan2
added 133 characters in body
Oct
26
comment In how many ways can we choose $2$ integer numbers from $1$ to $128$ such that their sum is divisible by 4?
@jmf_zaiecp: ${1\over2}\cdot{128^2\over4}\ne 2016$.
Oct
25
answered If $f''(x)$: conti- on $[a,b]$, then there exist $c$ ($c\in[a,b]$) s.t $\int_{a}^{b}f(x)dx=\frac{b-a}{2}(f(b)+f(a))-\frac{(b-a)^3}{12}f''(c)$
Oct
25
comment A basic doubt to compute exponential of a matrix
@copper.hat: Why should this paper be dubious? Note that Cleve Moler has built the first version of Matlab.
Oct
25
answered Continuous differentiability of atan2
Oct
24
revised A cascade of inequalities
edited title
Oct
24
comment A method of finding the eigenvector that I don't fully understand
@Marc van Leeuwen: I don't like matrices with different types of entries. – In dimension $3$ you have a clear cut geometrical interpretation, which is lacking when $n>3$.
Oct
24
answered A method of finding the eigenvector that I don't fully understand
Oct
24
answered find the centroid of shown plane figure
Oct
24
answered In how many ways can we choose $2$ integer numbers from $1$ to $128$ such that their sum is divisible by 4?
Oct
24
answered A cascade of inequalities
Oct
23
answered Calculus: volume of revolution about a line other than the $x$-axis.
Oct
23
answered Diagonalise without finding eigenvalues
Oct
23
revised Mean Value Theorem Confusion.
added 210 characters in body
Oct
23
comment Mean Value Theorem Confusion.
@caffeinemachine: You cannot get Lagrange's version of the MVT from $(1)$ or similar.
Oct
23
answered Mean Value Theorem Confusion.
Oct
23
comment By applying the second version of the Fundamental Theorem of Calculus find the integral:
@john.smith: Maybe there is more in the full text of the problem; but otherwise you are done.
Oct
23
revised By applying the second version of the Fundamental Theorem of Calculus find the integral:
added 34 characters in body