Chapter 0 Preface Operation rule is the same as that for derivative d(ly)=l±hv d(uv)=vdu+udv d(Cu)=Cdu C is a const vau-uay d()= (v≠0 ●●●●鲁● One application of differential fx→>x0 Ay=f(x)-f(o)a f(ro)(x-xo f(x)af(o)+f(o(x-xo When xo =0 f(x)f(O)+f'(O)xChapter 1Chapter 1 Measurment Chapter 0 Preface d(u  v) = du  dv d(uv) = vdu+udv ( ) ( 0) 2  − = v v vdu udv v u d d(Cu) = Cdu ,C is a const. Operation rule is the same as that for derivative: ...... One application of differential ( ) ( ) '( )( ) 0 0 0 y = f x − f x  f x x − x 0 if x → x ( ) ( ) '( )( ) 0 0 0 f x  f x + f x x − x When x0 = 0 f (x)  f (0) + f '(0)x