A. 1
B. − 1
C. − cot² x
D. − tan² x
E. \(-\,\frac{\pi+x}{x}\)
[ 4-5355 - op net sinds 16.10.2025-(E)- ]
Translation in E N G L I S H
IN CONSTRUCTION
Oplossing - Solution
Teller = cot x
Noemer = − cot x
