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[if lt IE 8]> <p class="browserupgrade">You are using an <strong>outdated</strong> browser. Please <a href="http://browsehappy.com/">upgrade your browser</a> to improve your experience.</p> <![endif] Errors & Warnings [Description] Note: Your code for each level is saved in your browser. Start Level menu You solved the level in seconds. OK Level menu You can predict the future of the system by calling simulate(dt, controlFunc) on the model state. Example: // Simulates for 0.5 seconds. The input for the model is set to be the negative of its `x`. newState = state.simulate(0.5, function(s){ return -s.x ;}) simulate() returns a modified copy of the model state. The control function will be evaluated only once at the start of a simulate() call and held constant during the simulation, so choose a small dt. You can vi...

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