69,027 reputation
145130
bio website math.ethz.ch/~blatter
location Switzerland
age 79
visits member for 4 years, 4 months
seen 19 mins ago

Dec
15
answered How many ways can the vertices of an equilateral triangle be colored using three different colors?
Dec
15
comment Solving $\sinh(ax) = bx$
What is the envisaged range of ${b\over a}\>$?
Dec
15
revised Do the properties of cauchy sequences carry over to converging functions?
added 4 characters in body
Dec
14
answered If $|z-3i|+|z-4|=5$ then find the minimum value of $|z|$
Dec
14
answered Do the properties of cauchy sequences carry over to converging functions?
Dec
13
answered Why does the determinate definition of the cross product give a vector that is perpendicular to the plane?
Dec
13
answered Use differentials to estimate the error in volume of the box.
Dec
13
revised Two ways of finding a Potential of a Vector Field
added 114 characters in body
Dec
13
answered Two ways of finding a Potential of a Vector Field
Dec
13
comment Two ways of finding a Potential of a Vector Field
Your second paragraph is marred with typos.
Dec
12
answered When is this vector valued function pointing towards the origin?
Dec
12
answered Taylor Series of a Complex Function
Dec
11
answered Show Riemann sums satisfy $|f(b) - f(a)| * ||P||$
Dec
11
awarded  Necromancer
Dec
11
comment How many different cubes can be obtained if four colours are used?
You should specify whether all four colors have to be used.
Dec
11
revised Find volume of the circumscribing tetrahedron
edited title
Dec
11
answered Find volume of the circumscribing tetrahedron
Dec
10
answered Find all functions: $\left ( \int \frac{dx}{f(x)} \right )\left ( \int f(x)dx \right )=c$
Dec
10
comment How would I solve this ODE?
You forgot the factor $x$ in the original ODE.
Dec
10
answered Bases $\{v_1,…,v_k \}$ and $\{ v_1' ,…,v_k' \}$ for $V$ are equivalent iff $T(v_1,…,v_k )$ and $T(v_1',…,v_k' )$ have the same sign