Input x is the sampled signal vector, may have both AC and DC components. output vector y should have AC components removed then change sign alternately, for example, input [1:5], output [3 -3 3 -3 3].
Could you be a bit more specific about the specs? What exactly are we supposed to do here?
Word Counting and Indexing
Replace multiples of 5 with NaN
Is it a number?
Is the input divisible by 3?
Volume and area of a sphere
Have you seen any Spindromes recently?
Predicting life and death of a memory-less light bulb
cos for boss?
How to subtract?
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