3.86: Find ff from ff'' and two conditions

0606/11/O/N/24 — Question 8 · 8 marks

Given that f(x)=3x2+5f''(x) = 3x^{2} + 5, f(1)=6f'(1) = 6 and f(1)=20f(1) = 20, find an expression for f(x)f(x).
[8]