There are twelve semitones in a music octave, when frequency doubles. Dividing this doubling into twelve equal parts, yields the twelfth root of two. An interesting Maxima problem is to compute its convergents; These values agree with wikipedia and provide some sort of explanation https://en.wikipedia.org/wiki/Twelfth_root_of_two (%i3) 2^(1/12),numer; (%o3) 1.059463094359295 (%i4) cf(%); […]

maxima is constructed as a double layer. Bottom level is lisp, and upper level is maxima. Building ecl. https://common-lisp.net/project/ecl/ Building maxima. git clone https://git.code.sf.net/p/maxima/code maxima-code

(%i9) divsum(28); (%o9) 56

One recent cipher option in openSSH is ed25519. This is an Elliptic curve and is used in many public key cryptographic schemes. These curves are polynomials in two variables -- (x,y), and of the second degree in y, and of the third degree in x. One can consider the curve […]

1990 bmw 325i limited slip differential S373 they pinion has 11 teeth and the ring has 41 but the gear ratio should be stamped on the pinion cf(3.73); ratsimp(cfdisrep(%));       373 (%o20)       --- 100 (%i21) ratsimp(cf([3, 1, 2, 1, 2, 2, 1])); (%o21) [3, 1, 2, 1, […]