Question

f(x) = √(cosx) + √(sinx) dx

Answer 1

$$f(x)=\sqrt{(\cos x)}+\sqrt{(\sin x)}$$

$${df\over dx}={1\over 2\sqrt{(\cos x)}}(-\sin x)+{1\over 2\sqrt{(\sin x)}}(\cos x)=$$

$$={\cos x\over 2\sqrt{(\sin x)}}-{\sin x\over 2\sqrt{(\cos x)}}$$