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seen Jul 13 at 1:17

Feb
7
comment Basic Euclidean Geometry, Circle Arc
Your strategy would depend on the relative distance between the way points and the turning radius of your vehicle. If the distance is much larger than the radius, then you should just point and shoot for the next way point (i.e. drive a straight line), if they are of the same order of magnitude you will probably need to compute curve paths.
Feb
6
reviewed Reviewed Indefinite integral of secant cubed
Feb
6
revised Indefinite integral of secant cubed
Added LaTeX for equation.
Feb
5
reviewed Approve suggested edit on Basic analysis - sequence convergence
Feb
4
reviewed Approve suggested edit on For how many values of $n$ with $0\le n\le100$ is the graph of $f(x)=\sin(x+n)$ identical to the graph of $g(x)=\cos x$?
Feb
2
awarded  Nice Answer
Feb
2
reviewed Approve suggested edit on shortest distance between two points
Feb
2
comment Determining whether the system will have a nontrivial solution?
Perhaps you could explain what a1, a2, and a3 are. If they represent columns or rows of the matrix, then it will be singular because they are linearly dependent.
Feb
1
comment Let $T:\mathbb R^2\to\mathbb R^2$ defined by $T(x,y) =(x,0)$ all $x,y\in \mathbb R$. Is $T$ open?
Please explain what you have tried and where you are stuck.
Jan
31
comment Remaining volume of a sphere
If you used cylindrical coordinates, you can obtain the volume by just changing the limits of integration of the $r$ term.
Jan
31
reviewed No Action Needed Functions & Cellular automata
Jan
29
reviewed Close Question about proof in Baby Rudin
Jan
29
comment Compute Angle Between Quaternions (in Matlab)
@sat, it is because each quaternion represents a rotation with respect to the same frame of reference. What we are interested in is a rotation from one quaternion to the other, so we need to find a composition of the two quaternions by transforming backward along one (i.e. inverse or conjugate) and then transforming forward along the other. That is the way to take the "difference" for rotations. I hope this helps.
Jan
28
reviewed No Action Needed Coherence isomorphisms in the definition of the descent category.
Jan
26
reviewed No Action Needed boolean algebra question here very short?
Jan
26
reviewed No Action Needed Intersected cone, a practical problem
Jan
26
reviewed Reviewed Daily life as a math professor
Jan
26
reviewed No Action Needed Cancelling some dx's
Jan
26
reviewed No Action Needed How to solve this differential equation? It's not separable, nor exact nor homogeneous.
Jan
26
reviewed No Action Needed Constants of integration in integration by parts