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What is observation survey?
no idea i think it's when u do a survey by observing a series of events e.g observing how many times a camel goes to drink.
What does the derivative of a square wave look like?
It is a series of impulses (Dirac Delta functions), each positioned at the point where the square wave changes amplitude. For a negative change in amplitude, the impulse is -inf; likewise, for a positive change in amplitude, the impulse is +inf. The fourier expansion of the square wave is: 4/pi sum_{k=1}^\infty [ sin((2k-1)*w*t) / (2k-1) ] Likewise, its derivative is: 4/pi*w sum_{k=1}^\infty [ cos((2k-1)*w*t) ] If you plot, the first 50 terms, you will get a pretty good idea of what it looks like. impulse
Who were alchmists and what was their idea?
who were alchists and what was their idea
Is a segment an idea and not a physical object?
it is a idea
Who invented the idea of number zero?
History shows that it was an Arabic idea.
