A hint to get started
Prove the inverse-cosine derivative using its principal range
Prove that .
CJC · Lecture appendix · Example D
Identify the form before applying a rule. Preserve the original domain while simplifying.
Read the worked solution
A hint to get started
Prove that d(cos−1x)/dx=−1/1−x2.
CJC · Lecture appendix · Example D
Identify the form before applying a rule. Preserve the original domain while simplifying.