apeforest commented on issue #14613: [MXNET-978] Higher order gradient support for some unary operators URL: https://github.com/apache/incubator-mxnet/pull/14613#issuecomment-499172139 @kshitij12345 I updated the test locally and it also fails with sin(x) and cos(x) as well with the same reason of log(x). I have not pushed it to the remote because it then requires your PR for log(x) merged first. Otherwise the test will always fail. Still trying to understand what's the meaning of head_grads.grad here.
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