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PHYS171_f11_lecture_03

PHYS171_f11_lecture_03 - PHYS171 Principles of Physics I...

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PHYS171 Principles of Physics I Prof. Arthur La Porta Assistant Professor, Department of Physics, Institute of Physical Science and Technology Maryland Biophysics Program [email protected] Rm 1111, IPST building (building #085) Chapter 1 Propagation of errors I measure certain quantity x with known uncertainty. I calculate something from the measurements, y=f(x). What is the uncertainty in y ? This applies when there is only one variable. Notation: this is a “partial derivative.” Partial derivative means we take the derivative, assume that any other variables are not allowed to vary. x f x f σ σ =
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