29:29'must have', 'might have', 'should have' & 'can't have' to talk about the past: Live English Class
BBC Learning English
MIT RES.18-009 Learn Differential Equations: Up Close with Gilbert Strang and Cleve Moler, Fall 2015 View the complete course: http://ocw.mit.edu/RES-18-009F15 Instructor: Gilbert Strang When competition slows down growth and makes the equation nonlinear, the solution approaches a steady state. License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
Published 2016-05-06 · Watch on YouTube ↗
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29:29BBC Learning English
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26:06The Royal Institution
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