单词 | differentiation |
释义 | differentiation The process of finding the derivative of a function in differential calculus. If y = f(x) , the derivative of y, written dy/dx or f'(x), is equal to the limit as Δx→ 0 of [f(x + Δx) - f(x)]/Δx. In general, if y = xn , then dy/dx = nxn-1 . On a graph of y = f(x) , the derivative dy/dx is the gradient of the tangent to the curve at the point x |
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