Which of the following functions has an absolute minimum value?

MATHEMATICS · Single correct · AP · Calculus AB · Analytical Applications of Differentiation · Analytical Applications of Differentiation

Problem

Which of the following functions has an absolute minimum value? (1)

\cot(\sin x)

(2)

\tan(\log x)

(3)

x^{2005}-x^{1947}+1

(4)

x^{2006}+x^{1947}+1