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comment How to calculate the disjunctive normal form of boolean function?
For boolean functions with only a few variables, you can write a truth table and collect the terms where the function evaluates to true. The disjunction of these minterms is a DNF. See here: en.wikipedia.org/wiki/Disjunctive_normal_form
May
12
answered Logic gate diagram and $K$-map.
May
10
comment Disjunctive normal form and shannon normal form
You could try to save some work by prior simplification, but a truth table for three variables is not that long anyhow.
May
8
answered Disjunctive normal form and shannon normal form
May
6
comment Matrix Properties Reference
Have a look at the Matrix Cookbook: eattardo.com/wp-content/uploads/2013/10/MatrixCookbook2012.pdf
Apr
5
comment Radio factory linear program
Hint: Translate the description into linear equations or inequalities - sentence by sentence. Decision variables (week-wise): producing workers. Dependent/derived variables: production volume, payments, working costs, mentoring workers, productive students (= additional workers or mentors). In your objective function you just added the revenues but forgot to subtract the costs.
Apr
4
answered An effective way to find missing minterms
Mar
27
answered A problem on solving functional equations
Mar
26
revised expanding boolean expression as maxterm
added 311 characters in body
Mar
26
answered expanding boolean expression as maxterm
Mar
4
revised Closed form for this 2 variable recurrence?
extended table
Mar
3
answered Closed form for this 2 variable recurrence?
Feb
10
answered Steepest-descent optimization method
Feb
9
answered Boolean Algebra Simplification
Feb
2
comment $n$ is a divider of $c$ if and only if $n = 2(c \mod (n-1)) - (c \mod(n-2)) + 2$
The equation holds for $n=7$ and $c=51$. But $7$ is no divider of $51$. Or, what do you mean by "same bit count"?
Feb
1
revised Find the numbers by XoR
added generalized proof, spelling
Feb
1
answered Find the numbers by XoR
Jan
27
comment Express Kirchoff's first law using power flow.
The sum of currents flowing into a junction node equals the sum of currents leaving the node. But the directions are different. Therefore, you have to use opposite signs.
Jan
17
awarded  Yearling
Jan
16
answered Permutations - n people and n seats