MCQ
If y = $(\cos x)^{(\cos x)^{(\cos x)}}$, then $\frac{ d }{ d x}$ = ______.
- ✓$\frac{-y^2 \tan x}{1-y \log \cos x}$
- B$\frac{-y^2 \tan x}{1+y \log \cos x}$
- C$\frac{y \tan x}{1+y \log \cos x}$
- D$\frac{y \tan x}{1-y \log \cos x}$
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Compound X is ____________.