Barrons AP Calculus - David Bock

dmanu (dmanu) 2022-08-30 04:58:57 UTC #1

(A) Since ln q is defined only if q > 0, the domain of ln cos x is the set of x for which cos x >
0, that is, when 0 < cos x 1. Thus − ∞ < ln cos x 0.

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