Reduction formulae
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Matrix notation- Simultaneous differential equations - Systems of differential equat
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In order to solve simultaneous differential equations we will use matrix notation. Therefore, it is important to recall that the system of simultaneous equations in three unknowns [Equation goes here - download the original to see it.] as follows [Equation goes here - download the original to see it.] can be represented in matrix form by [Equation goes here - download the original to see it.] [Equation goes here - download the original to see it.] then our simultaneous equations can be written [Equation goes here - download the original to see it.] We will use this style of representation for simultaneous differential equations too. That is for example, the simultaneous differential equations [Equation goes here - download the original to see it.] may be written [Equation goes here - download the original to see it.] [Equation goes here - download the original to see it.] [Equation goes here - download the original to see it.] then we can write this system as [Equation goes here - download the original to see it.] In the above example the matrices are constant coefficient, but in the following example they are functions of Example Write [Equation goes here - download the original to see it.] in matrix form Solution Rearrange the last equation to [Equation goes here - download the original to see it.] then [Equation goes here - download the original to see it.] That is [Equation goes here - download the original to see it.] [Equation goes here - download the original to see it.] [Equation goes here - download the original to see it.]
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Contents of Reduction formulae
1 Reduction formulae 2 Simultaneous differential equations - Systems of differential equations 3 Matrix notation- Simultaneous differential equations - Systems of differential equat 4 First order systems - Simultaneous differential equations - Systems of differential 5 Example - Simultaneous differential equations - Systems of differential equations 6 Solution to first-order constant coefficient homogeneous systems
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