The 2nd in C major is D.
F
Major C and the Major C
C major: C D E F G A B C C minor: C D Eb F G Ab Bb C
Here is an intuitive method for working this polynomial problem, which can be solved as easily as adding apples to apples and oranges to oranges. Think of the same-named variables and variable pairs as different "things." In this example, each polynomial contains none or one or more of these three different things: "ax", "by", and "c". So all we need to do is add (or subtract) up the "ax"s, then the "by"s, and then the "c"s and write it down. ax: 1 in the first polynomial + 2 in the second + none (0) in the third = 3 "ax"s. by: 1 in the first polynomial - 3 in the second +1 in the third = -1 "by"s. c: 1 in the first polynomial + 1 in the second - 1 in the third = 1 "c". The answer is the polynomial made up of the three results above: 3ax - 1by + 1c = 3ax - by + c
The 2nd in C major is D.
B flat
A minor second.
You can have a musical scale starting anywhere you like. On the piano, the simplest scale is C major, in which the second note is D. In all major and minor scales, you can find the second note by moving up two semitones from the first note (C-C#-D or G-G#-A)
D natural
The supertonic of any scale is the second degree of the scale. Therefore, the supertonic of C major is D.
F
The interval between C and D is a major second or a "whole step".
C major
C major
There are two tetrachords in a diatonic scale. The second tetrachord has the higher four notes. In D major, they are A B C# and D.
Which composer? Mozart's concerto no. 23 in A has its second theme in E major, and in the recapitulation it returns in A major. Schumann's concerto in A minor has its second theme in C major, returning in A major for the recapitulation.