Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [math]

Abstract study of of topics such as quantity (numbers), structure, space, and change.

4
votes
1answer
215 views

Need help understanding a complex mathematical password checking function?

Below is a complex pseudocode for a mathematical problem which attempts to check if a password entered is correct or not. Previous Analysis Done: Data is arranged in the form of 3x3 Matrix with i,j ...
-1
votes
0answers
106 views

Decode Filter Coefficients for Audio DSP

I'm trying to create my own bit of code to create filter coefficients for this particular audio dsp system but I can't decipher the filter coefficients. Here's what I have: DSP is floating point ...
4
votes
2answers
231 views

Generating a key for a simple algorithm

I have this pseudo code: v5 = serial[6] + serial[0] - serial[7] - serial[2]; LOBYTE(v5) = serial[1]; v8 = serial[3] + v5 - serial[4]; if ( v8 != serial[5] ) goto FAIL; The variable serial[] is ...
-2
votes
1answer
58 views

Area calculations & what about 12.5m? [closed]

The shown girder is made from plain stone concrete and four 25 mm diameter steel wires. Including the weight of steel wires, determine self weight of the girder if its length is 12.5 m. Neglect the ...
2
votes
1answer
103 views

Need help to figure out a chksum [closed]

I am looking at a 32 byte sequence, the chksum I believe is either the 1st two bytes or last 2 bytes (I am leaning on the last 2 bytes). I think it is a straight 16bit xor but I can't find the crunch ...