seqa, seqm¶

Purpose¶

seqa() creates an additive sequence. seqm() creates a multiplicative sequence.

y = seqa(start, inc, n)¶

y = seqm(start, inc, n)¶

Parameters:

Returns:

y (nx1 vector) – containing the specified sequence.

a = seqa(2, 2, 10)';
print a;

2 4 6 8 10 12 14 16 18 20

m = seqm(2, 2, 10)';
print m;

2 4 8 16 32 64 128 512 1024

Note that the results have been transposed in this example. Both functions return Nx1 (column) vectors.

For seqa(), y will contain a first element equal to start, the second equal to \(start + inc\), and the last equal to \(start + inc*(n-1)\).

For instance,

seqa(1, 1, 10);

will create a column vector containing the numbers 1, 2, ..., 10.

For seqm(), y will contain a first element equal to start, the second equal to \(start * inc\), and the last equal to \(start * inc^n-1\).

For instance,

seqm(10, 10, 10);

will create a column vector containing the numbers 10, 100,..., `10^10`.