mudzm11 - Muddy Card Responses Lecture M11 Clarify a bit...

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Muddy Card Responses Lecture M11 Clarify a bit more on tensors. A bit confused. We will go over the aspects of tensors we need to use as we apply them to stress and strain tensors. In Einstein notation how do you tell the difference between F ij and F ik seems like both of these are F i1 +F i2 +F i3 , but there is obviously a difference (as in s 21 + s 23 )? There is no functional difference, i, j, k. or for that matter p, q and r are just dummy symbols, that take values 1, 2 or 3. Remember the function of the indices is to indicate whether there are separate equations or summation across the indices, depending on whether the indices appear once or twice in a particular term. Last PRS question - confused?. I will put this up again at the beginning of the next lecture. In the meantime you can look at the question and the solution at the bottom of these muddy responses. Please better explain the last PRS question (maybe another to make sure we got it). See previous response.
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