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2 changes: 1 addition & 1 deletion content/frequency_domain.rst
Original file line number Diff line number Diff line change
Expand Up @@ -126,7 +126,7 @@ To return to the time domain from frequency is almost the same, aside from a neg
.. math::
x(t) = \int X(f) e^{j2\pi ft} df

Note that a lot of textbooks and other resources use :math:`w` in place of the :math:`2\pi f`, where :math:`w` is angular frequency in radians per second, while :math:`f` is in Hz. All you have to know is that
Note that a lot of textbooks and other resources use :math:`\omega` in place of the :math:`2\pi f`, where :math:`\omega` is angular frequency in radians per second, while :math:`f` is in Hz. All you have to know is that

.. math::
\omega = 2 \pi f
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