D(kp)=D(ka3x'+ka2x+kajx+k ao =k(3a3x2+2a2x+a1) =kDp (2)如果T(p)=a0,那么T也是一个线性变换 T(p+q)=a0+b0=T(p)+T(q); T(p)=kao=kT(p) 上页( ) ( ) 1 0 2 2 3 D kp = D k a3 x + k a x + k a x + k a (3 2 ) 2 1 2 = k a3 x + a x + a = kDp. (2) ( ) , . 如果T p = a0 那么T也是一个线性变换 ( ) ( ) ( ); T p + q = a0 + b0 = T p + T q ( ) ( ). T kp = k a0 = kT p