Polinomio de Taylor
Ejemplo: Obtener el polinomio de Taylor de la función f( x )=senx en x=0 y en x= π 4 .
Derivando
f(x)=senx f(0)=0 f( π 4 )= 2 2 f'(x)=cosx f'(0)=1 f'( π 4 )= 2 2 f''(x)=−senx f''(0)=1 f''( π 4 )= 2 2 f'''(x)=−cosx f'''(0)=−1 f'''( π 4 )=− 2 2 f (iv (x)=senx f (iv (0)=0 f (iv ( π 4 )=− 2 2 ... ... ... f (2n (x)= (−1) n senx f (2n (0)=0 f (2n ( π 4 )= (−1) n 2 2 f (2n+1 (x)= (−1) n cosx f (2n+1 (0)= (−1) n f (2n+1 ( π 4 )= (−1) n 2 2 por lo que: T 2n+1 [ senx;0 ]=x− x 3 3! + x 5 5! +...+ ( −1 ) n x 2n+1 ( 2n+1 )! T 2n+1 [senx; π 4 ]= 2 2 ( 1+( x− π 4 )− 1 2 ( x− π 4 ) 2 +... ...+ (−1) n (2n)! ( x− π 4 ) 2n + (−1) n (2n+1)! ( x− π 4 ) 2n+1 )