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Honor`s Pre-Algebra Chapter 8 Test Review Short Answer Solve the
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... TOP: Solve inequalities that involve more than one operation. KEY: Solve Inequalities 17. ANS: x = 1st and 2nd side x – 5 = 3rd side x + x + x – 5 = 40 15 ft, 15 ft, 10 ft The perimeter of a triangle is the sum of its three sides. Write an equation according to the given information. Solve the equat ...
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Partial differential equation



In mathematics, a partial differential equation (PDE) is a differential equation that contains unknown multivariable functions and their partial derivatives. (A special case are ordinary differential equations (ODEs), which deal with functions of a single variable and their derivatives.) PDEs are used to formulate problems involving functions of several variables, and are either solved by hand, or used to create a relevant computer model.PDEs can be used to describe a wide variety of phenomena such as sound, heat, electrostatics, electrodynamics, fluid flow, elasticity, or quantum mechanics. These seemingly distinct physical phenomena can be formalised similarly in terms of PDEs. Just as ordinary differential equations often model one-dimensional dynamical systems, partial differential equations often model multidimensional systems. PDEs find their generalisation in stochastic partial differential equations.
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