Learn more: http://www.policonomics.com/marginal-rate-of-substitution/ Versión en español: https://www.youtube.com/watch?v=vj0pX3olzdo This video explains how to calculate and use the marginal rate of substitution (MRS). We start by learning how to calculate it, then move on to use it in order to properly draw indifference curves and, finally, we analyse the MRS for different kinds of indifference curves. Related videos: -Utility function: https://www.youtube.com/watch?v=z0YUXlRUAA0 -Indifference curves: https://www.youtube.com/watch?v=JVadAl9qifM Related articles: -Marginal rate of technical substitution: http://www.policonomics.com/marginal-rate-of-technical-substitution/ -Marginal rate of transformation: http://www.policonomics.com/marginal-rate-of-transformation/ Thank you for watching! http://www.policonomics.com/ Learn, and enjoy!