Made inverse test use a non-singular matrix
Made inverse test use a non-singular matrix


Former-commit-id: aa7183ebebc135fe852bd2eba8cece74f2912d0a
clab/cnn,shuheik/dynet,shuheik/dynet,danielhers/dynet,shuheik/dynet,chunyang-wen/dynet,danielhers/dynet,xunzhang/dynet,chunyang-wen/dynet,shuheik/dynet,clab/dynet,shuheik/dynet,chunyang-wen/dynet,clab/dynet,danielhers/dynet,shuheik/dynet,xunzhang/dynet,danielhers/dynet,danielhers/dynet,shuheik/dynet,clab/dynet,clab/dynet,clab/dynet,clab/cnn,danielhers/dynet,xunzhang/dynet,chunyang-wen/dynet,clab/dynet,danielhers/dynet,xunzhang/dynet,clab/cnn,clab/dynet