f(x) = a0/2 + ∑[a_n cos(nx) + b_n sin(nx)]
“Solve Example 4.1 (page 121, 44th edition): Expand e^x in Taylor series about x=0.” f(x) = a0/2 + ∑[a_n cos(nx) + b_n
A genuine for B.S. Grewal would have: