Seventy deadly sines
Calculus
Level
3
\(f(x)=\overbrace{\sin\sin ... \sin}^{70\text{ sines}} (x).\)
Calculate the seventh derivative of \(f\) evaluated at \(x=0.\)
Note: Using computer software to answer this question is an even deadlier sin than nesting 70 sines inside each other, so don't do it.
by
Franklin Pezzuti Dyer