Why did the diff(y.laplace(t,s),x) come out to be D0(y(x, t), t, s)*D0(x, t)? Could someone help me?
|   | 1 |  initial version  |  | 
|   | 2 |  fixed formatting  | 
|   | 3 |  No.3 Revision  | 
Why did the diff(y.laplace(t,s),x) come out to be D[0](laplace)(y(x, t), t, s)*D[0](y)(x, t)?   Could someone help me?
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                Copyright Sage, 2010. Some rights reserved under creative commons license. Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.