Question

Differentiate. The answer is supposed to be -3/ sqrt 4-x^2

Answer 1

Explanation:

`g(x)=\cos^(-1) ((x)/(2))\\g'(x)= \frac{- 1}{\sqrt{1-((x)/(2))^2}}*(1)/(2) \\=(-1)/(√(4-x^2) )`