Take a cubic polynomial f.\nf(1)=1\nf(2)=2\nf(3)=3\nf(4)=5\nfind f(6)\nplease give the solution.

Take the general cubic equation :
f(x) = ax^3 + bx^2 + cx + d
take f(1), f(2), f(3) and f(4). You will get four equations and you will get a,b,c and d.
Then find f(6).
Thanks
BHarat Bajaj
askiitians Faculty
IIT Delhi

Approved