I am trying to use R to solve the differential equation:
x'' + 5x = 0
x(0) = 0
x(1) = 2
I am using the package deSolve, but just cannot seem to get a grasp on how to set up a system.
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you need to decompose it into a system of two first-order equations (i.e. x'=y; y' =-5*x; with corresponding initial conditions) – Ben Bolker Mar 17 '15 at 21:28
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At the moment I can't see off the top of my head how to convert your ICs into a pair of ICs with respect to x and x' at time zero (math question, not programming question) – Ben Bolker Mar 17 '15 at 21:40
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except for the IC issue this seems to be a duplicate of http://stackoverflow.com/questions/15756058/any-r-package-to-solve-variable-coefficients-second-order-linear-ode – Ben Bolker Mar 17 '15 at 21:51