倪雨泽 资深光能 a2+b2=c2a^2+b^2=c^2 a2−b2=(a+b)(a−b)a^2 - b^2 = (a + b)(a - b) f(x)=f(a)+f′(a)(x−a)+f′′(a)2!(x−a)2+⋯+f(n)(a)n!(x−a)n+Rn(x)f(x) = f(a) + f'(a)(x-a) + \frac{f''(a)}{2!}(x-a)^2 + \cdots + \frac{f^{(n)}(a)}{n!}(x-a)^n + R_n(x)
