(香港中文)。喺2020-05-06搵到。 Cheuk Hang Au; Kevin K. W. Ho. "The role and impact of online derivativeworks in social movements: a level model emerging from the case study of
function is applied to each node separately, so the derivative is just the diagonal matrix of the derivative on each node. This is often represented as the
)變化嘅數量 f ( t ) {\displaystyle f(t)} , f ( t ) {\displaystyle f(t)} 嘅導數(derivative)係 f ′ ( t ) {\displaystyle f'(t)} ,當中 f ′ ( t ) = lim h → 0 f ( t + h