intfel(0,3,0.1) 

104^(1/4) 

103^(1/4) 

format long 

x=3 

x=x-(x^4-103)/(4*x^3) 

x=x-(x^4-103)/(4*x^3) 

x=x-(x^4-103)/(4*x^3) 

x=x-(x^4-103)/(4*x^3) 

x=x-(x^4-103)/(4*x^3) 

x=x-(x^4-103)/(4*x^3)