Can you help me understand this?
If $y=\lvert\cos x\rvert+\lvert\sin x\rvert$ then at $x=2\pi/3$, what is $dy/dx$?
The answer is $(\sqrt{3}-1)/3$, but how?
2026-04-11 23:46:49.1775951209
If $y=\lvert\cos x\rvert+\lvert\sin x\rvert$, then what is $dy/dx$ at $x=2\pi/3$?
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