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Date: 13-7-2018
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Date: 12-7-2018
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Date: 12-7-2018
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The wave equation is the important partial differential equation
(1) |
that describes propagation of waves with speed . The form above gives the wave equation in three-dimensional space where is the Laplacian, which can also be written
(2) |
An even more compact form is given by
(3) |
where is the d'Alembertian, which subsumes the second time derivative and second space derivatives into a single operator.
The one-dimensional wave equation is given by
(4) |
As with all partial differential equations, suitable initial and/or boundary conditions must be given to obtain solutions to the equation for particular geometries and starting conditions.
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علامات بسيطة في جسدك قد تنذر بمرض "قاتل"
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أول صور ثلاثية الأبعاد للغدة الزعترية البشرية
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مكتبة أمّ البنين النسويّة تصدر العدد 212 من مجلّة رياض الزهراء (عليها السلام)
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