133,488 reputation
1281161
bio website none
location San Mateo, CA
age 59
visits member for 3 years, 10 months
seen 9 mins ago

3m
comment how to calculate least square root of a nonlinear equation?
Presumably that is delta, but delta from what?
14m
comment how to calculate least square root of a nonlinear equation?
I don't understand "the least square root of an equation". Are you looking for the minimum of $z^2$? That will occur when at least one of $x,y$ is zero.
1h
comment Having a bit of trouble with min/max distance from sphere to point
Just make the circle $x^2+y^2=81$ and the point $(7,12)$ for example. Draw the line through the origin and the point. Is it required to use Lagrange multipliers, or do you specifically want to do so?
1h
revised Having a bit of trouble with min/max distance from sphere to point
edited tags
1h
answered Having a bit of trouble with min/max distance from sphere to point
11h
answered Scan through all integers within a range by incrementing constant amount
1d
answered Function that has potential to increase current value, based on current value
1d
answered Permutation and Combination with restrictions
1d
comment The Result of Dividing 2 Power Series
Not quite. But assuming the sum converges, you can define $A(x)$ as that sum. It then gives you a differential equation for the expression you want.
1d
answered The Result of Dividing 2 Power Series
1d
comment Find the $4$ sq. roots of $100$ in $ U_{209}$. Identify which square root of $100$ is square.
@B.L.Miller: You could post your solution as an answer and accept it so we have such. This is encouraged.
1d
comment Probability of two people calling the same person at the same time
It seems that you should understand that there is not enough information to answer the question.
1d
answered How to get the third point coordinates in isosceles triangle?
2d
answered How to compute 1/7 in base 8?
Jul
26
awarded  Revival
Jul
26
answered Algorithm for a counter
Jul
26
comment Algorithm for a counter
That is a mix of programming and outer world interface that you should define. It is a fine question but if you specify the format clearly you may get better answers. So $a$ is full seconds and $b$ is nsec. You have lost a small bit of range because $2^{30} \lt 0^9$ but not much.
Jul
26
revised Combination Problem with Sofa
add info
Jul
26
comment Combination Problem with Sofa
@AndréNicolas: Oops, you are right. So we have two choices: a derangement of five or a derangement of four. I agree with 53-44 where the blank sofa changes and 9 where it stays the same.
Jul
26
comment Strategies to work with system of trigonometric inequality
Being equal to zero is hard, so almost any values of the variables will make the expression nonzero.