## Partial derivative notation in Sage

This post will explain the notation used to denote partial derivatives in the output from Sage. It’s confusing at first, but a simple example will make it clear. Here is the input to Sage: var(‘x y’) function(‘test’, x, y) show(test(x, y)) show(diff(test(x, y), x)) show(diff(test(x, y), x, 2)) show(diff(test(x, y), y)) show(diff(test(x, y), y, 2)) […]

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